In ancient times, there were many taboos on this day, such as having to eat jiaozi, not cooking with uncooked rice, and not allowing women to visit. The Chronicle of Yanjing Years Old says that the fifth day is called "Breaking Five", and it is forbidden to cook with uncooked rice, and women are not allowed to go out.
Extended data:
The origin of breaking five verses
According to the list of gods, when Jiang Ziya was deified, he branded his wife who betrayed him as a "poor god", which made her "get lucky". In myths and legends, Jiang Ziya's wife is a very annoying cheating wife, and it is even more annoying to be labeled as a poor god. So people "broke" her on the fifth day of the first month and told her to go back at once.
It is also said that the fifth day is the birthday of the God of Wealth, so people should hold a grand banquet, set off firecrackers and carry out various celebrations on this day to welcome the arrival of the God of Wealth.