How old were the adults in ancient times?

In ancient China, a man's adult ceremony at the age of 20 was called "coronation ceremony".

In ancient times, when a woman reached the age of 15, she tied her hair and wore it, because 15 was called a woman. It also means that you have reached marriageable age, such as "the year is over".

Fu: A hair clasp for tying hair. Ancient women were engaged at the age of fifteen, and they tied their hair and wore hairpins that year; When I was not engaged, I tied my hair and wore a hair clasp at the age of twenty.

Extended information of preparation activities before bar mitzvah:

1. Date: The date is fixed. Set it on an adult's birthday (Gregorian calendar or lunar calendar) or a day of great significance to it. However, it is not appropriate to invite people to participate in the Spring Festival, Mid-Autumn Festival and family reunion. The theme of the Qingming Festival doesn't match, so the temple can't have both.

2. Invited guests and abstaining guests: that is, the participants are determined and invited by invitation cards or various communication methods. For distinguished guests, parents should invite them home three days in advance (the latest day).

References:

Baidu encyclopedia-adult ceremony