Total 538Articles
News list
Content Forum List
2019-08 12

[Academics][Researcher of the Month] Lengthening the Service Lifespan of Building Structures

The paradigm of architecture is changing. The construction market used to focus on efficiency and speed, but the modern era values structures with high durability and long lifespans. Professor Lee Han-seung (Major in Architectural Engineering) developed the Durability Health Monitoring System, which collects information on the state of the corrosion of iron and whether chlorine ion and carbon dioxide have penetrated through a sensor installed inside concrete structures. This is groundbreaking technology that was published in the prestigious science journal Advanced Materials on April 15th, 2019, titled "A Colorimetric Multifunctional Sensing Method for Structural-Durability-Health Monitoring Systems." Professor Lee Han-seung (Major in Architectural Engineering) was featured in HY-ERICA magazine's 2019 summer edition, and he also received the 2019 HYU Academic Award. Lee majored in architecture materials and construction in the department of Architectural Engineering, and his main research interest is concrete materials. He is the director of the Innovative Durable Building and Infrastructure Research Center, created as part of the Engineering Research Center (ERC) business to develop material, construction, monitoring, and maintenance technology to enhance the durability of structures. Fourteen professors from eight universities are working together to focus on their research into four major topics: durability diagnosis monitoring sensors, durability design, protection and repair construction methods, and a maintenance and asset value comprehensive evaluation system. Concrete, which is most often the preferred material in construction projects, deteriorates when it comes into contact with chlorine ion or when the substance gradually permeates through the hardened surface. In a ferroconcrete structure, the iron will rust once chlorine ion infiltrates. And once chlorine ion pervades, the iron expands, and the concrete is destroyed. This phenomenon equals the end of the lifespan of the concrete structure. Lee wanted to be able to gauge how much chlorine ion has penetrated a structure, which would require monitoring technology with a sensor. His research team developed the Durability Health Monitoring System, which tells through wireless communication modules whether iron is corroded or chlorine ion and carbon dioxide have seeped through. A thin film type sensor is buried in the concrete infrastructure beforehand, in order to activate the durability monitoring system. The infiltration of carbon dioxide and chlorine ion inside a concrete structure is a tantalizing the problem, but Lee developed a sensor using optics. His solution was to prevent it from reaching the iron inside the concrete, through the use of the Durability Health Monitoring System. Structures built 30 to 40 years ago need to have their durability diagnosed and maintenance needs assessed, just as humans are obligated to undergo health check-ups at similar ages. There are two ways of monitoring a structure's health. One is to execute structural heath monitoring, in the way a seismometer warns of the danger of earthquake through vibrations. Another is to increase usage by making it convenient to use its waterproof system, air conditioning and heating, electricity and more. “My final goal is to extend the service lifespan of building structures to 200 years," said Lee, with a confident smile. Lee emphasized the importance of fusion research and incorporating Fourth Industrial Revolution technology with architectural engineering. He applied optical science when he put sensors on optical fibers to recognize the intensity when either carbon dioxide or chlorine ion has entered, in real time, by looking at the change of colors. “Securing durability is also eco-friendly," said Lee, when pointing out that long lifespans of structures decreases co2 and prevents the exhaustion of resources. He stressed that a structure that can stand longer is more beneficial financially, and in the life cycle perspective. Kim Hyun-soo Photos by Lee Hyeon-seon

2019-08 11

[General]Five Seconds to Clean Your Tumbler at School

As environmental issues have gained attention worldwide, Hanyang University has decided to take action as well. After the announcement of Hanyang's intention to become a plastic-free campus made by President Kim Woo-seung in June, the first step was to install tumbler cleaning stations on campus. By encouraging students to avoid using disposable paper and plastic cups and to use tumblers instead, the aim is to reduce annual waste emissions by five percent. However, as of yet, not many students have made use of the cleaning stations. The Sustainable Eco-Friendly (SEF) planning group, a newly formed voluntary student group for a plastic-free campus in charge of advertising the tumbler washing stations, pointed out that not many students are aware of the cleaning stations yet. “I’ve seen many students just walk by wondering what they are or actually throw rubbish in them,” said Kim Gong-min (Department of Educational Technology, 3rd year), a member of SEF. The members are working hard to promote the facilities by posting on Everytime (a smartphone application for school timetables) and making card news for students to see. To further promote the active use of the tumbler washing stations, SEF joined News H for an interview this week. Q: Where are the tumbler cleaning stations? A: Currently, there are three tumbler washing stations on campus: on the first floor of Hanyang Plaza, the first floor of Engineering Building Ⅰ, and the third floor of the Paiknam Academic Information Center and Library. They will be easy to find, since they are mostly located near drinking fountains and water purifiers. There are three tumbler cleansers on campus. From the top, on the first floor of Hanyang Plaza, the first floor of Engineering Building Ⅰ, and the third floor of the Paiknam Academic Information Center and Library. Q: How do you use the tumbler cleaning stations? A: The cleaning process is very simple: open the tumbler (mugs work as well), empty the contents into the round liquid bin, flip it upside-down and place it on top of the washing machine, and press down. The powerful water stream will cleanse the inside of the tumbler immediately. The three steps of how to use the tumbler cleaning stations. The members added that many campus cafes, including A Twosome Place and CoffeA provide a discount for using a tumbler. (Photo courtesy of SEF planning group) Q: Will there be more tumbler cleansers? A: The three washing stations are on a trial run during the holiday. Once the semester starts, we will receive feedback on how often the cleansers are used. If we receive positive feedback, it is possible that the tumbler cleansers will be installed in every building on campus. More than anything, students’ active use and interest is the most important factor for this to happen. (From left) The members of the SEF planning group: Kim Young-woo (Department of Political Science and International Studies, 3rd year), Byun Sun-jung (Division of Tourism, 2nd year), Kim So-hee (Division of International Studies, 3rd year), and Kim Gong-min (Department of Educational Technology, 3rd year) Apart from the tumbler cleaning stations, the members of SEF explained that they plan on a number of different activities to help Hanyang students get involved in environmental issues. “I hope our campus changes into a disposable cup-free campus. Some say we are being particular, but throughout the process of advertising the tumbler washing stations, we have come to realize that there are many people who share our sentiments. I hope Hanyang becomes a place where students participate and freely share their opinions on environmental matters.” Lim Ji-woo Photos by Kim Ju-eun

2019-08 06

[Academics][Researcher of the Month] Development of Organic Semiconductor Gel for High-Resolution Organic Electronics

Organic semiconductor gel was first developed by Professor Kim Do Hwan (Department of Chemical Engineering) and his research team that opened doors to the dramatic performance enhancement of virtual reality (VR) and augmented reality (AR) devices. His paper “Universal Route to Impart Orthogonality to Polymer Semiconductors for Sub-Micrometer Tandem Electronics” was published in the world-famous journal Advanced Materials as the cover acticle in July. Professor Kim Do Hwan (Department of Chemical Engineering) explained in detail the organic semiconductor gel, the keyword from his research. Among existing semiconductors, silicon semiconductors are used representatively in many facets of the semiconductor and display industries. However, silicon is too brittle and requires expensive processing such as vacuum deposition. In 1977, Alan J. Heeger, Alan G. MacDiarmid, and Hideki Shirakawa found the first organic semiconductor made of carbon and hydrogen, uncovering the first organic matter that electricity flows through. In this sense, organic semiconductors were in the spotlight as the next generation of semiconductors, but they still could not substitute silicon semiconductors which allowed electricity to pass through at high speeds. That was, until about five years ago when high-performance organic semiconductors were created, enabling the speed of electricity transfer to become comparable to that of silicon semiconductors. However, another problem emerged as existing organic semiconductors could not adopt successive solutions and photolithography processes simultaneously, because organic semiconductors may dissolve or become damaged during patterning processes. Here, photolithography refers to the semiconductor patterning technology which uses UV light as in the process of silicon semiconductors. Kim and his research team investigated how organic semiconductors could keep the established solution processing, while maintaining the optoelectronic performance, as well as adopt the patterning process of silicon called photolithography. Ultra-High Definition (UHD) OLED microdisplay with a hyper-resistant organic semiconductor gel basis to realize AR or VR. (Photo courtesy ot Kim) They created organic semiconductor gel to apply a new conversion methodology that can be applicable to conventional photolithography processing as well as sequential solution processes while keeping the performance level of existing organic semiconductors. “Gel” refers to semi-Interpenetrating Diphasic Polymer Network (semi-IDPN), which is a three-dimensional, high-density, entangled structure between organic semiconductor and organosilica chains. Organosilica is a silica network that includes organic chains. Through the newly created organic semiconductor gel, the research team found that organic semiconductors can be made from sequential solution processing and patterned into desired sizes via photolithography. Kim (second from the left) and his research students who participated in this study. The results of this research are expected to widen the application of new technology into various organic optoelectronic devices such as organic image sensors and neuromorphic electrodes, as successive solution processing and photolithography processing are now applicable. “The performance of VR and AR devices that used to arouse giddiness and motion sickness due to low resolution is expected to advance drastically with the application of organic semiconductor gel,” said Kim. The virtual reality that we thought only possible in movies has now become closer than ever to real life, with ultrahigh-definition (UHD) OLED microdisplays and high-performance VR and AR devices coming alive with the development of organic semiconductor gel. Kim Hyun-soo Photos by Kim Ju-eun

2019-08 05

[General]The New Buildings We Will See Soon

The founder of Hanyang University Kim Lyun-joon once said that "Construction sounds will never cease on Hanyang campus." Accordingly, construction sites on Hanyang campus are giving a new face to the school. Currently, there are about 30 large and small scale construction projects taking place throughout the campus. The completed construction of Track and Field The two biggest construction projects at the moment are the building of the new track and field with an underground parking lot and the School of Nursing's Future Education Center. The track and field are being transformed into a greener sports ground containing a soccer field, basketball courts, and a running track, sitting above an underground parking lot. The Future Education Center will be a six story building located between HIT and Hanyang Hospital, exclusively for the department’s use. The construction projects are expected to be completed by March 31, 2020 and July 31, 2020, respectively. The track and field are under construction. By March of 2020, this place will be transformed into a sports ground with an underground parking lot. (Photo courtesy of Facility Maintenance Team) The Future Education Center is under construction. On the right is the design of the building that will be completed by July 2020. (Photo courtesy of Facility Maintenance Team) Aside from these two major projects, there are 28 small scale construction projects, including extension work on the HIT Commax Startup Town and painting the exterior of Music Halls Ⅰ and Ⅱ. Many more construction projects are being planned, including the construction of Student Residence Halls 6 and 7, the Biomedical Research Center, and the Machinery Building, all of which are in the designing stage. There are access prohibitions students should be aware of. The wooden sidewalk around the track and field is closed to pedestrians, and the roads around the Business Administration Building and Multidisciplinary Lecture Hall are inaccesible to cars. “We are currently making our best effort to complete all the construction on schedule, with safety as our priority,” said Shin Kyu-chul, a Facility Maintenance Team member. “The various construction sites may create inconveniences such as noise, dust, and entrance shutdowns. We ask for Hanyangian’s cooperation and promise to do our best to make a safe and pleasant campus environment.” Lim Ji-woo Photos by Lee Hyeon-seon

2019-07 31

[Academics][Excellent R&D] Smarter Production of Shale Gas Using AI

In the previous era of oil and gas, conventional natural resources like coal were hard to find and costly to attain. In the search for an easily obtainable energy source, shale gas entered the limelight and has become an increasingly important natural gas since the early 21st century. In his recent study "Smart Management of Unconventional Oil and Gas Wells," Professor Sung Won-mo (Department of Earth Resources and Environmental Engineering) designed AI technology which manages a more efficient method of shale gas production. Professor Sung Won-mo (Department of Earth Resources and Environmental Engineering)'s recent study aims to develop an AI management technology for the most efficient production of shale gas. Natural gas is extracted through wells that are drilled two to three kilometers deep from the ground. The conventional production of gas was an extremely uneconomical procedure, primarily because the source of gas is concentrated within a very small area, thus being difficult to find. For instance, while extracting marine gas a kilometer under the sea costs more than 100 billion won, its success rate hovers at three percent. Shale gas (natural gas extracted from shale, which is a fine-grained, laminated sedimentary rock consisting of silt and clay-sized particles), on the other hand, is an unconventional energy source that tends to be found over a wide area, hence is much easier to locate. For this reason, shale gas has become a very important energy source. “Gas consumption will reach its peak in 2050. Until the end of the 21st century, securing the gas supply will be very important, and shale gas is a highly productive and cost-efficient energy source,” said Sung. Left is an image of a gas well. A conventional well is used for extracting conventional natural gas, and an unconventional well is used for shale gas. Right shows the various information that is gathered from a well. AI management technology will analyze the data to ensure the most efficient production of gas. (Photo courtesy of Sung) Sung’s research focuses on developing AI management technology for the most efficient production of shale gas. Attaching an AI sensor onto the well allows it to collect and analyze related data to ensure the most precise and efficient production procedure. “The data we collect from the sensor is so vast that it is impossible to be analyzed by humans or with a regular computer. However, AI learns from the information and analyzes the new data with impressive speed and accuracy,” explained Sung. The model will help predict the type of rock, type of gas, and components of gas according to the depth. As the result, more accurate drilling and product predictions will be possible, ultimately lowering the unit cost of gas. Sung said he has been aware of the prospect of shale gas for a long time and hopes that in the future, the new technology will help secure this gas resource for Korea. “Korea does not possess many natural resources and relies heavily on imports,” added Sung. “I hope this new technology can be developed further so that it can be implemented in policies, helping to secure this gas resource in Korea.” Lim Ji-woo Photos by Lee Hyeon-seon

2019-07 31

[HOT Issue]Meet ERICA's Character "Hanyangi" as a Kakao Talk Emoticon

Kakao Talk is known as the national messenger. In the service, the most popular service is the emoticon shop to which Hanyang University's character was just launched. The lion character, Hanyangi, which was designed and managed by students of ERICA Campus has officially been registered in the emoticon store, equipped with various motions. The prepared amount all sold out within 5 hours of beginning the free download event. On July 17th, ERICA Campus Office of Admissions' Kakao Talk plus friend account ( announced the download event would start at 2 pm on the 25th. The emoticon was distributed the moment a user added the account as a plus friend. The event offered a limited number of downloads, and they ran out before the closing time of 7pm. With the title of "Hanyangi's Cheerful Life," the emoticon pack (collection) has a total of 16 stickers with motions, which can be used for various emotions in diverse situations. So, the number of Hanyang University ERICA Office of Admissions' Kakao Talk plus friends exceeded 14000 on the 30th, and it is posting announcements such as the university admission fair. Translated by Jeon Chae-yun

2019-07 31

[Alumni]President Kim Woo-seung Visits Alumni Companies in Gyeongsang Province

President Kim Woo-seung vised alumni companies in Gyeongsang Province on Wednesday July 10th. On this day, the Dean of the Office of External Affairs and Development Oh Sung-geun, Vice Dean of the Office of External Affairs and Development Ahn Jong-gil, the head of the Secretary Team Kim Seung-joo, and the section chief of the Office of External Affairs and Development Lee Soo-yong were traveling with the president. First, the group visited Hanmaum Changwon Hospital and took a look around the construction site of the Hanmaeum International Medical Center. Afterwards, there was a luncheon, which the chairman of the board Ha Choong-sik and the director of the hospital Park Seong-soo (Emeritus Professor of the Department of Medicine) attended, along with the visiting group from Hanyang University. ▲Officials of Hanmaeum Changwon Hospital and President Kim Woo-seung (fifth from the right) and the visiting group from Hanyang University are taking a commemorative photograph. In the afternoon, the group visited President Ha Sung-sik (Department of Mechanical Engineering, '71) of HANKOOK Steel & Mill Co.,Ltd, visiting the factory and the chairman's office for tea time. ▲ Officials of HANKOOK Steel & Mill Co.,Ltd, and the visiting group from Hanyang University are taking a commemorative photograph. The group also visited the Korea Institute of Materials Science, guided by the chief Lee Jung-hwan (Department of Precision Mechanical Engineering, '76) and the vice chief Kim Do-guen (Department of Metal Engineering, '91) and other officials on a tour of the research laboratory. ▲ President Kim Woo-seung (fourth from the left) and the officials of the Korea Institute of Materials Science are taking a commemorative photograph. During the second half of the trip, after the visits to alumni companies, a banquet was held at the Chinese Hall of the Changwon Hotel for the executives of the alumni association of Gyeongsang Province. At the banquet, the visiting group from Hanyang University, the CEO of Kyung Nam Metal Park Soo-hyun (Department of Metal Engineering, '70), the president of Union Kang Dae-chang (Department of Civil Engineering, '66), the president of Central Kang Tae-ryong (Department of Business Administration, '66), the president of HANKOOK Steel & Mill Co., Ltd Ha Sung-sik (Department of Mechanical Engineering, '71), the chief of the Korea Institute of Materials Science Lee Jung-hwan (Department of Precision Mechanical Engineering, '76), the vice chief Kim Do-guen (Department of Metal Engineering, '91), and a member of Hanyang Development Supporting Committee Jung Oh-gyun (Department of Law, '83) were present. ▲ A banquet was held for the executives of the alumni association of Gyeongsang Province at the Chinese Hall of the Changwon Hotel. Translated by Jeon Chae-yun

2019-07 29

[General]DREAM Hanyang, the Future of Sports Industry

The Department of Sports Industry hosted DREAM Hanyang on July 22nd, which mainly consisted of high school students from all regions gathering at the Olympic Gymnasium for a performance test, career guidance, and information about admission to the College of Performing Arts and Sport. Professor Lee Jong-sung (Department of Sports Industry) gave a speech during the opening ceremony of DREAM Hanyang on July 22nd, at the Olympic Gymnasium. High school students who dream of entering Hanyang University's Department of Sports Industry had a chance to experience an evaluation of their performance ability in advance. Current undergraduate students of Hanyang University led a seminar on sports-related departments to help future Hanyangians design their career path. Afterwards, starting from 6 pm, students could take time to relieve their academic stress by enjoying some congratulatory performances. The main goal of DREAM Hanyang was to provide students with admission information in relation to the Department of Sports Industry and to motivate them to join Hanyang University. Professor Lee Jong-sung (Department of Sports Industry) remarked, “Celebrating the 80th anniversary of Hanyang University, we wanted to hold the DREAM Hanyang event at the Olympic Gymnasium. It is a historic venue which was used as a volleyball arena at the 1988 Seoul Olympics.” High school students were doing their best to achieve good scores on the performance test. Lee Ha-yan came from Incheon to measure her athletic skills in preparation for college admissions. Lee Ha-yan is a second grade student at Kyesan Girl’s High School, who came from Incheon to test her athletic skills in hopes of entering Hanyang University. “I was nervous, so I didn’t do as well as I would have done at school,” said Lee after her first standing long jump attempt. Students were being tested on standing long jumps. Son Seung-wu (Department of Sports Industry, 2nd year, right) introduced the Department of Sports Industry to encourage students to join. Son Seung-wu (Department of Sports Industry, 2nd year) was in charge of the department promotion. “I hope students took away important tips to help them during the college admissions process. This is a great chance for them to learn where they stand in terms of athletic abilities among other students from all parts of the nation,” said Son. He added that their years as high schoolers will never come back, so he hoped that they will treasure today’s experience. Students who excelled on the DREAM Hanyang performance tests received awards. DREAM Hanyang was successfully completed with the participation of nearly 2,100 high school students. The day’s events helped to advance their understanding of the Department of Sports Industry through casual talks with seniors, and allowed them to reflect on their training through competition with peer groups. Kim Hyun-soo Photos by Kim Ju-eun and Kim Ga-eun

2019-07 23

[Academics][Researcher of the Month] Precisely Investigating Catalytic Reactions

Professor Lee Sang-uck (Department of Chemical and Molecular Engineering) has recently developed a computer simulation methodology, also known as One Probe Non Surface green’s function (OPNS) to precisely understand the catalytic reaction of energy production storage using catalysts. In order to exchange existing catalysts that use rare-earth elements into ones that use cheaper carbon material, one must understand the catalyst reaction of carbon materials. Lee’s research and thesis titled “Unraveling the Controversy over a Catalytic Reaction Mechanism Using a New Theoretical Methodology: One Probe and Non-Equilibrium Surface Green's Function” contributed to developing a methodology of accurately interpreting catalyst reactions and to the development of a new and cheaper carbon catalyst. Professor Lee Sang-uck (Department of Chemical and Molecular Engineering) is explaining the logic of the One Probe Non Surface green’s function (OPNS) methodology. The first step of the research was to interpret the traits of catalysts in a particular material. He used the most prevalent methodology for interpretation, but was faced with a theological problem: while chemical reactions and catalyst reactions must accurately consider the flow of electrons, the widely used method does not give such considerations. For instance, the former would consider the reaction of the parallel state when it should interpret the reaction of a non-parallel state. Using the High Performance Computing server (HPC), which is a super computer with around 360 cores, it was possible to solve quantum mechanics that mathematized natural phenomena. Lee is pointing to the High Performance Computing servers (HPC) that were used for the research. Research typically consists of understanding a natural phenomenon and expresses the research results in the form of a formula. Through coding, natural phenomena can be simulated in a computer, and that enables researchers to interpret any phenomena. Lee specifically utilized quantum mechanics computer simulations to understand the conduct of electrons and atoms, thereby solving the problem of the existing methodology. Such computer simulations can be applied in semiconductor materials or energy materials. Computer simulations have the advantage of allowing simultaneous screenings using several computers when developing high performance matters. Lee and his team suggested a guideline to understanding and predicting the new property of matter, and developing a new matter after adopting a computer simulation technique to electrons and energy materials. This thesis in particular suggests a way to clearly establish the reaction mechanism to know how catalytic reactions occur when developing poles for solar cells. While previously it was impossible to perfectly reflect all experiment environments, Lee developed a new methodology that took into account most of the real experiment atmosphere and developed a definite catalytic reaction mechanism. Also, a way to attach electric fields in computer simulations for catalyst reactions with voltage was made possible through the new findings. A catalyst reaction is a chemical reaction, thus requiring electrons to move; however, no methodology was available that took into account the movement of electrons. This new methodology is one that can interpret chemical reactions, with respect to the flow of electrons. Lee was designated Researcher of the Month with the development of the OPNS methodology to precisely investigate catalytic reactions. “What we do is basic research for the future process of developing real things. There was a need to concretely understand what happens within the development of lithium batteries, solar cells, and fuel cells, which is why we strived to develop a methodology to accurately interpret such theories,” said Lee. He went on to emphasize the need for parallel effort in experiments and computer simulations in order to achieve innovations, and the use of a clear methodology to enhance data credibility. Kim Hyun-soo Photos by Lee Hyeon-seon

2019-07 22

[General]Korean Traditional Fan Dance Performed by Foreign Students

K-pop, K-dramas, and Korean food are becoming global phenomena. However, in comparison, not much is known about Korea’s traditional aspects. In the 2019 summer school, as an attempt to introduce Korea's traditional culture to foreign students, Hanyang University opened the only traditional fan dance (buchaechum) class for the summer school students in Korea. For the 2019 summer school, Hanyang University opened a traditional fan dance (buchaechum) class for the foreign students. The fan dance is a traditional Korean dance for celebrations. As the name tells, the dance involves using two large traditional fans decorated with pink feathers, which the dancers move to form the shape of birds, flowers, butterflies and waves. Dancers wear bright-colored hanbok (Korean traditional dress) and Korean bridal crowns when performing the fan dance. Shin Kyeong-a (Department of Dance), the teacher of the fan dance class, explained the goal of the class, saying “most students only know about K-pop dances and are surprised to find out that we have a preserved traditional dance. We wanted to create an opportunity for foreign students to get to know a bit about the traditional culture.” Adjunct professor Shin Kyeong-a (Department of Dance, left) and Park Jin-young (Department of Dance, doctor's program, right) were the teachers of the fan dance class. There are 16 students from various backgrounds in the class. During the four-week program (from July 2nd to 26th), the class gathered and practiced for two hours from Monday to Thursday. By the end of the third week, they mastered the 6-minute-long intricate fan dance moves. One of the students, Alison Murphy (Athabasca University, Canada), said “it’s fascinating that none of us are dancers, yet we’ve managed such a beautiful flower shape with fans.” Galia Nankin (University of Bridgeport, Israel), another participant, agreed and said, “I’ve never danced, so coordination was the hard part. It gives a really big sense of satisfaction that I can do this beautiful dance.” They added that they are looking forward to performing at the summer school graduation ceremony on July 26th. Students of traditional fan dance class (from left), Galia Nankin, Chifan Lin, and Alison Murphy talked about their experiences of learning the fan dance. Students picked the arrangement of fans in a flower shape as the hardest, yet most beautiful dance routine. The teachers hope that after the class, students will leave with a fresh interest in the culture. “I keep in touch with last year’s students and they still have a continuing interest in Korean culture,” said Park Jin-young (Department of Dance, doctor's program), the assistant teacher. “I hope this year’s students were also able to learn about our tradition, and take them back to their home cultures." Lim Ji-woo Photos by Kim Ju-eun