1 month 2 1 day is a good day?

According to the solar calendar, the 21st day of the first month is an auspicious day.

New Year's Day is "Son-in-law's Day", and it is the day when the father-in-law fetes his son-in-law.

Celebrating Father's Day on the ninth day left a lot of food. I ate all day on the tenth day, and there was a lot left. It won't be wasted to entertain the son-in-law. Therefore, the bride's family doesn't have to spend any more money on food, so she treats her son-in-law and daughter with these leftovers, and at the same time, it is also to promote the harmonious development of the relationship between husband and wife. Therefore, this custom has been preserved in the important festival of China New Year. In ancient times, she was called eleven sons-in-law.