He found a faculty place to teach mathematics in a middle school in Beijing after one year of unemployment. He successively worked as a lecturer at National Labour University,[2] a course interpreter in the Chinese Northeast Navy in Qingdao, a physics and chemistry teacher in Kaifeng and a math teacher in Beijing Fu Jen Catholic University high school successively. In September 1933, he worked as a lecturer in the Department of Mathematics and Physics at Fu Jen Catholic University.