There is a famous saying in the ancients that "it's like a clever hammer making its own tools to draw circles and squares, so that later craftsmen can know how to draw circles and squares." The ancients also called it ruler rope ink. The country can't have no rules for a day, the family can't have no rules for a day, and the school can't have no discipline for a day.

In adolescence, everyone pursues the development of individuality and freedom. However, freedom is relative, and English also says that "freedom is not freedom." Freedom is not free.

Xiang Yu was able to carry the tripod and win the title of the three armies, but because of his arrogance, he committed suicide on the Wujiang River. Fan Li, a doctor in Vietnam, knows the importance of self-control. After the death of Wu, he did not take credit, but retired to his hometown and enjoyed his old age. It can be seen that people should learn self-discipline or accept external constraints while publicizing their individuality, so as to achieve a win-win situation. Not only won the development of personality, but also gained wisdom.