The ancients divided the time like this: childhood is below 12 years old, and 12 years old is called the age of young generals. The weak crown of 20 years old is youth. Some people think that after 18, 30 years old represents youth and enters middle age. They are called the prime of life, and they know their destiny at the age of 50. Of course, they are old. There are still 60 flowers. What we call a midlife crisis often happens in middle age.
Extended data:
Middle-aged people are the backbone of society, shouldering the responsibilities of the state and society, and are the main force of various departments and industries. They have heavy tasks, great responsibilities, high expectations for career achievements, diligence and responsibility, and long-term high-intensity mental pressure. This situation seriously threatens the physical and mental health of middle-aged people, especially middle-aged intellectuals.
For most middle-aged people, they have clear goals in their career and expect to achieve them through their unremitting efforts. However, due to various subjective and objective factors, they often encounter difficulties, setbacks and even failures in their careers. This is a strong or lasting blow and pressure for individuals who pursue perfection.
References:
Baidu Encyclopedia-New Era Subdivision