In the 1970s and 1980s, there was a lot of poverty in rural areas. In order to save money and materials and continue their incestuous relationship, parents had no choice but to exchange their daughters with each other's brothers and marry them as sisters-in-law. Therefore, marriage exchange, also known as sister-in-law exchange or exchange marriage, became popular for a while. Some families have no daughters, so they can only be alone for the rest of their lives. Without children, they will be lonely and helpless for the rest of their lives. However, changing in-laws also brings misfortune to many families. Sometimes the discord between one family and the other will lead to discord. And because of the exchange of in-laws, they dare not divorce. Some people live in a nightmare all their lives.
Purpose: In the 1970s and 1980s, there was a lot of poverty in rural areas. In order to save money and materials and continue their incest, parents had no choice but to exchange their daughters with each other's brothers and marry them as sisters-in-law. Therefore, marriage exchange, also known as sister-in-law exchange or exchange marriage, became popular for a while. Some families have no daughters, so they can only be alone for the rest of their lives. Without children, they will be lonely and helpless for the rest of their lives. However, changing in-laws also brings misfortune to many families. Sometimes the discord between one family and the other will lead to discord. And because of the exchange of in-laws, they dare not divorce. Some people live in a nightmare all their lives.