First, daughters are often sacrificed in times of material scarcity. In the era of very limited resources, some elderly people in families think that their sons are their own blood, and their daughters want to get married when they grow up. Therefore, daughters are often mercilessly sacrificed at a very young age, and the limited resources at home are spent on their sons.
When the daughter reaches the age of marriage, some families marry her off early in order to save some rations, and the old people in their parents' families begin to treat her as an outsider, because in their subconscious, the married daughter is just spilled water. On New Year's Eve, even the poorest families will prepare some materials for the Chinese New Year, and this limited material can only be enjoyed by sons. If their daughter returns to her parents' home on this day, it will be considered as a scramble for resources with her son.
Second, now that the material is abundant, the elderly are looking forward to their children coming back for the New Year.
After 40 years of reform and opening up, China has now become the second largest economy in the world, with abundant materials. At this time, the old people's ideas have also changed a lot, and they no longer regard their daughters as outsiders. No one said that a daughter's spending the New Year at her parents' house was robbing her son of resources. On the contrary, because of family planning, many families are only children, even if there are not many brothers and sisters. And family reunion on New Year's Eve can make people prosperous.
Therefore, the economic base determines the superstructure, and whether a woman can return to her parents' home on New Year's Eve has a great relationship with the level of social development.