 In 1922, Zheng established the first magazine for children, "Children's World" (兒童世界) In January 1923, he became the chief editor of a monthly magazine of novel, "Fiction Monthly" (小說月報).After the May 30 Incident in 1925, he helped founding a newspaper called "Gongli Ribao" (公理日報).From then on, he wrote many books including "Zhongguo Wenxue Shi" (History of Chinese literature 中國文學史, 1938) and "1943 Diary" (1943年日記).