Problem supplement

1. During the Spring and Autumn Period, Jin Wengong and Zhong Er defeated Chu, and Jin Wengong became the overlord.

2. Sleeping hard, Gou Jian became rich in the late Spring and Autumn Period.

During the Warring States Period, Sun Bin defeated Wei Jun.

4. Zhao Gao Qin Dynasty made Qin Ershi more dependent on Zhao Gao.

5. During the Warring States Period, for their own interests and security, the vassal states sometimes tended to Qin and sometimes to Chu.

6. Xiang Yu and Qin cross the rubicon, making Qin's forces turn from advantages to disadvantages.

7. Xiang Yu was besieged on all sides, and Liu Bang and Chu Han competed for hegemony, which made Xiang Yu defeated.

8. Visiting Liu Bei in Maolu made Liu Bei's power flourish in the late Eastern Han Dynasty.

9. Fu Jian's Eastern Jin Dynasty made the Eastern Jin regime more stable.

10. Ban Chao in the Eastern Han Dynasty strengthened the rule of the Eastern Han Dynasty over the Western Regions.