In South Korea, May 15th is Teacher’s Day. Jung Chae Yeon, one of Produce 101 trainees, currently a member of I.O.I. visited JKS to convey her thankfulness giving a cake and strawberry juice. She also delivered strawberry juice to Produce 101 trainers.
Original source: http://entertain.naver.com/read?oid=213&aid=0000873126