After the peaceful liberation of Beiping, Hu Sidu was sent to the Political Research Institute of North China People's Revolutionary University (the predecessor of China Renmin University) to study. At the study meeting, he spoke enthusiastically and said that he would draw a clear ideological line with his father. 1950 On September 22nd, Hu Sidu published Criticizing My Father-Hu Shi in Hong Kong Ta Kung Pao, with sharp words and sharp edges. Since then, Hu Sidu has been assigned to the Marxism-Leninism Department of Tangshan Railway Institute to teach literature and history. 1957 during the "anti-rightist" period, he was designated as a "rightist" element. Unwilling to be humiliated, he committed suicide at the age of 37.

It was not until Hu Shi 1962 died in Taipei that he realized that his youngest son, Hu Sidu, had hanged himself in Chinese mainland.

Hu Shi:

14, Chiang Kai-shek personally telegraphed Hu twice to Nanjing and sent a special plane to meet him. Hu got the news and decided to fly south. Before he left, he sent someone to persuade Chen Yuan, the president and friend of Fu Jen Catholic University and a famous historian, to fly to Beijing together, but Chen Yuan refused. To Hu Shi's surprise, not only did Chen Yuan, an old friend, not follow him, but even his youngest son, Hu Sidu, said that he would temporarily live in a relative's house and would not go south with his parents. This refusal surprised the Hu Shi couple and made them angry. They didn't know what to do.

194 1 year, Hu Sidu defected to Hu Shi, an ambassador in the United States, and returned to China in the summer of 1948. On August 30th, he reported to Beiping Library and became an employee of Beitu. According to Deng Guangming, anonymous secretary of Hu Shi's office, "Hu Sidu didn't want to fly with Hu Shinan at that time. He has just returned to Peiping from the United States and is not familiar with the domestic situation in recent years. He said: I didn't do anything harmful. They won't do anything to me. As a result, Hu Shi and his wife left him. "

Because of the emergency, Hu Shi can't and can't do the political and ideological work of this rebellious son behind his head in a short time. Seeing that Hu Sidu was full of youthful and rebellious breath, Hu Shi and his wife felt helpless and had to suppress their anger. According to an old proverb, it's going to rain, the mother will get married, or the son will stay at home-no matter what.

Hu Shi told his son not to go out to eat, drink, go whoring and gamble all day, do nothing but work, and then left. I didn't expect this farewell to become a permanent tactic.