(From left) Ph.D. student Yun Min Song (KAIST, co-first authors), Professor Sang Kyum Kim (Chungnam National University, co-corresponding author), Jae Kyoung Kim, CI (KAIST, co-corresponding ...

Yun Geun, 88, an inn owner in Busan, has donated her building worth 4 billion won ($2.73 million) to Chungnam National University in her hometown area of South Chungcheong Province.