As the saying goes, "the first day of jiaozi is the second day", and jiaozi is an indispensable staple food for important festivals in northern China. On the morning of the first day of the first lunar month, almost every family in the north eats jiaozi, which means "having sex at a younger age".

The first day refers to the first day of each month in the lunar calendar. As the saying goes, "A year's plan lies in spring, and a day's plan lies in the morning." Naturally, the first day of each month is also very important. Of course, the most important thing is the first day of the first month, which is the first day of the year. Since ancient times, there have been many customs, such as gathering money, drinking, setting off firecrackers, occupying the old age and paying New Year greetings.