1, 20 Don't be confused, it means that men in ancient China came of age at the age of 20, and were crowned to show their manhood. Before that, it was a bun, also known as the "total angle". Standing at the age of 30 means that people must determine their life goals and development direction at the age of 30.

2. Standing at 30, a China idiom, pinyin is sānshíérlì, the original intention is that people should establish their own values of life stability and the principle of being a man and doing things around 30 years old, such as Confucius standing at 30. Modernity refers to achievement. From the Analects of Confucius governing politics.