[2] He was liberated[clarification needed] in the year he entered Waseda University and returned to his father's hometown of Naju, Jeollanam-do in 1946.
[4] After teaching for more than 10 years, he earned a doctorate in science while studying in the United States and Canada.
[4] The original form, which means collective unconsciousness of the community, and the locality in which the community is located, were involved in the development of language and history.
[3] In 1983, he founded the Korean Mathematical History Association and became the first chairman, and in 1994, he participated in the development process of Ungjin Publishing (now Ungjin Thinkbig), a mathematics learning magazine brand of Ungjin Publishing (now Ungjin Thinkbig), along with his younger brother, Professor Kim Yong-guk of Hanyang University.
This is also the predecessor of Thinkbig, a learning center brand of Ungjin.