The chronological age refers to the age of 120, which is a meaningful proposition for human life in ancient China.

Years, that is, the natural years of life, is a person's natural life span while keeping various organs of the body in a healthy state, that is, natural life span.

Both Lao Zi and Wang Bing think that the age of Tian is 120 years old.

A meaningful life proposition in ancient China. Time is the year of talent, that is, the fate of nature.

There is a time limit to human life. Ancient health care experts and doctors thought it was 100 to 120 years old.