In the 1960s and 1970s, in the northern rural areas, a marriage form of marriage was popular, in which a girl from the family was married to a man who could not find a suitable partner, and then a girl from the man's family was exchanged for his daughter-in-law. This was called marriage exchange. For a two-girl household without a boy, a girl from the girl's family is used to marry the boy, and then a boy from the boy's family is exchanged for a son-in-law. This kind of deformed marriage is the product of a special era, either because of poverty or as a victim of political movements. With this as the background, this book takes the emotional entanglements and marital entanglements between the two generations of Zhang Mandun, a long-term worker, and Gao Xiuyuan, a landlord's widow, as the main line. It shows the difficult process of people at the bottom of society in that period who did not bow to fate and fought hard. Finally, they ushered in a reversal of fate. The resumption of the college entrance examination achieved life goals, and the reform and opening up realized the value of life. Through the ups and downs, joys and sorrows of the world, it shows the destruction and respect for the human spirit, which is an important symbol of social progress and backwardness, civilization and ignorance.