After returning to China, Hsu Tzu-ming taught at Peking University and National Central University in Chungking. In addition, former President Chiang Kai-shek asked the professor to teach special "current events" courses for his top military officers.
回國後，徐子明先後在北大及重慶中央大學等校任教，連先總統蔣公在征戰之餘，都要請徐先生上一堂「特別課」，給眾位將領剖析時局，共謀良策。