Refers to difficulties, mostly refers to unsatisfactory, or even very bad and unfortunate situations. It makes people sad and painful, but it can also temper the will. Almost all outstanding talents have experienced hardships and obstacles and become strong men in life.

1. Born in sorrow and died in happiness. ——Mencius

2. Therefore, when Heaven will assign great responsibilities to people, they will benefit from what they cannot do. (Same as above)

3. Examples cited in "Born in Sorrow, Die in Peace".

4. King Wu Fucha was determined to avenge his father and defeated the powerful country Chu; he was greedy for pleasure and was defeated by the small country he had defeated - Yue.

5. Only after undergoing training can one be able to "become the king". After Pele became famous, a reporter interviewed him: "Will your son become the king of football like you in the future?" Pele Answer: "No. Because his living environment is different from mine. My living environment in childhood was very poor, but it was in this harsh environment that I honed my strong fighting spirit, which gave me the conditions to become a The king of football; but he lives an easy life and cannot become the king of football without enduring hardships."

6. The edge of a sword comes from sharpening, and the fragrance of plum blossoms comes from the bitter cold.