And crown jí guàn, which means that a man is over 20 years old.

And the crown, the ancient man was crowned at the age of 20, hence the name.

And the crown (also known as the crown, weak crown): after a man reaches the age of 20, he holds the ceremony of "and the crown", indicating that he is an adult and can take the word ". "Zi", also known as "table character", is named according to the original intention of childhood, such as Zhuge Liang, the word "Kong Ming"; Yue Fei, the word "Peng Ju". This is an ancient saying. In modern times, it is a rite of passage, usually 18 years old.