Yun Daiying was talented and industrious, though he never attended a middle school. In 1913, he was admitted to Wuchang Zhonghua University with excellent grades, where he studied hard and was one of the top students. He also taught himself German and Japanese at the same time.
In October 1914, only three months after the breakout of the First World War, Yun Daiying published “Deontology”in the Oriental Magazine in Shanghai.
From the second half of 1915, a newly published magazine entered the vision of the 20-year-old Yun Daiying. The magazine was called La Jeunesse, which soon became popular among the Chinese youth. Yun Daiying actively contributed to La Jeunesse and took the initiative to contact Chen Duxiu, editor-in-chief of this magazine.
At university, Yun Daiying founded the Mutual Aid Association, together with Xian Baiyan, Huang Fusheng and others. Though a mixture of utopian socialism and anarchism, it was one of the earliest progressive societies nationwide during the May Fourth Movement period.
In 1915, Yun Daiying married Shen Baoxiu. Despite the old-style marriage, they had a good relationship and led a happy life. Unfortunately, in February 1918, Shen Baoxiu died of dystocia. The grief-stricken Yun Daiying named himself “eonian spoony widower”, and continuously wrote four letters home in memory of his late wife. Yun Daiying’s sincere love to his wife was so noble and fabulous in that feudal society when women were despised and oppressed. On January 16, 1927, Yun Daiying married Shen Baoying, Shen Baoxiu’s younger sister and Yun Daiying’s revolutionary companion, which finally ended his 10-year single life of an “eonian spoony widower”.