The phrase "Independent personality, free thought" came from Chen Yinke. In 1925, Chen Yinke returned to China to teach at Tsinghua University. He first put it in the inscription on Wang Guowei's monument in 1929. The academic spirit and value orientation pursued by "the spirit of independence and the thought of freedom". He is recognized as an erudite and insightful historian in domestic and foreign academic circles. In the spring of 1942, someone, on orders from Japan, specially invited him to Japan. He refused to teach in Shanghai, which was occupied by the Japanese army. At that time, in the face of national peril, the Kuomintang government was corrupt and incompetent, passively resisting Japan and actively anti-Japanese. Chen Yinke felt sad, and some imperial literati in Guilin initiated the boring activity of presenting Jiuding to Chiang Kai-shek. , persuaded him to participate, he wrote "Guiwei Spring Day Sentiment": "Nine tripod inscriptions argue about the morality of litigation, and a hundred years of roughness always hurts the poor." To show satire. After the founding of New China, Chen wrote in his "Reply to the Academy of Sciences", He also elaborated on his views on the "independence and freedom" of academic research, hoping to "get a certificate from Mao Gong and Liu Gong" allowing "the Institute of Medieval Antiquity not to follow Marxism-Leninism, not to study politics...", and to accept it during the Cultural Revolution. He was shocked and died in Guangzhou on October 7, 1969.