What is the ending of the novel "Congratulations to Xiao Yan"?

After Japan's defeat and surrender, a large number of ordinary Japanese nationals who immigrated to northeast China in an attempt to implement long-term colonial rule in China were abandoned. 16-year-old girl Duo He is one of them. In the difficult escape, she escaped death by relying on her wit and instinctive desire for survival. She was put into a sack and sold to James Zhang, the second son of the stationmaster of a small railway station in Northeast China, as a "tool" for carrying on the family line. It is reported that James Zhang's brother was killed by the Japanese army in War of Resistance against Japanese Aggression, and James Zhang's wife, Zhu Xiaohuan, had a miscarriage because of the Japanese devils, and she was unable to have children from then on. Against the background of national Chou He family hatred, the involvement of Japanese girl Debao makes the whole family relationship ambiguous and strange.

After the founding of New China, the issue of Japanese women's congratulations has become not only a major emotional and ethical issue for the Zhang family, but also a huge political issue in the folk life of New China. Because Duohe is another woman who wants to refuse to rest, a rival in love who lives beside Zhu Xiaohuan, and the biological mother of the three children of the Zhang family. Her identity and status have become a headache for the Zhang family for decades. At the same time, how to cover up Tokuga's Japanese identity has become a nightmare for the Zhang family.