This is a very absurd but true story. This farce happened around us. After the cultural revolution in 1978, the society became no longer fanatical, and people’s thoughts gradually returned to rationality. Wang Yongheng was 29 years old and Ma Daqing was 25 years old. They were brothers. What made them more intimate was that Wang Yongheng and Ma Daqing were brothers. Wang Yongheng’s wife Chen Yingying was already the mother of a five-year-old child, and her sister Chen Qingqing, 22, was engaged to Ma Daqing. Since Wang Yongheng and Ma Daqing are brothers from childhood to adulthood, Ma Daqing often brings his fiancee Chen Qingqing to Wang Yongheng’s home to play. In addition, Chen Yingying is Chen Qingqing’s sister, so the two families have a good relationship. Our story begins with their relationship.