1921년 10월 봉황동의 회관에 노동야학강습회를 열고 40여 명 정도의 학생을 모집하여 가르치기 시작하여 1925년경에는 무보수 강사로 홍범식·김기창·김수철·심홍섭·민영용·임우빈·서달순·신경순·최익진 등 9명이 있을 정도로 활성화되었다.
In October 1921, a labor night lass was held in the hall of Bonghwang-dong, and about 40 students were recruited and taught. Around 1925, nine unpaid instructors, including Hong Bum-sik, Kim Ki-chang, Kim Soo-chul, Shim Hong-seop, Min Young-yong, Im Woo-bin, Seo Dal-soon, Shin Kyung-soon, and Choi Ik-jin, were active.