1, Birthdays cannot be celebrated twice a year: Modern people have no concept of birthdays, and think that birthdays are actually a celebration and an atmosphere. So, how to increase the festive atmosphere? Some people will choose a birthday in the solar calendar and a birthday in the lunar calendar. Some people even celebrate their birthdays more than twice a year. In fact, this is not correct. In traditional culture, having a birthday means that a person is one year older, regardless of the specific year, so having two birthdays a year unconsciously means "losing his life".

2. Don't argue, fight or have unpleasant things with others on your birthday: a birthday is a person's birthday, which indicates that a new year is about to begin. So try to avoid unpleasant things happening on the day when the new year begins, which means that the new year is happy.

3, birthday taboo 4 people together: there is a folk saying that "God three ghosts four", try to avoid this number on a big day like birthday.

4, the so-called birthday can not be postponed: the birthday can be postponed, but try not to pass it in advance. Birthdays are generally considered by ordinary people to be linked to people's "life span", so the significance of celebrating birthdays in advance is not very good.