1. At the end of the Spring and Autumn Period, Gou Jian, the king of Yue, was defeated and almost died, and became a courtier of the king of Wu. Later, he tried his best to please the king of Wu and was put back to Yue. He tried his best to cure Wu, and finally the revenge was eliminated.

In order to complete the compilation of Historical Records, Sima Qian endured humiliation and was not afraid of setbacks, and finally succeeded.

3. During the Warring States Period, Su Qin lobbied the King of Qin to adopt his political ideas, but the King of Qin didn't, and Su Qin returned home very depressed. His family treated him coldly, and Su Qin was stimulated and vowed to get ahead, so he stayed up all night, reading angrily, hanging his hair on the beam, sticking needles in his thighs, and bleeding profusely. Finally, he achieved his career.

4. Liu Bang lost many battles in Xiang Yu's battle, leaving his wife and children behind. However, he constantly searched for talents in setbacks, summed up experiences and lessons, and finally seized Xiang Yu's weakness, and won a great victory in flying daggers, completely destroying the arrogant Chu army, forcing Xiang Yu to commit suicide in Wujiang River and founded a great man.

5. In order to learn to steal the light from the wall, Kuang Heng was diligent and studious, overcame the learning difficulties brought by family poverty, and finally became a great scholar.