As one of the powerful countries in the Spring and Autumn and Warring States Periods, the power struggle within the Qin Dynasty was also exceptionally fierce. Among them, the rebellion of Cheng Jiao, the younger brother of Ying Zheng, was undoubtedly one of the major mysteries. So, why did Cheng Jiao rebel? Why did he betray his own country?

First of all, we need to understand that Cheng Jiao's rebellion was not out of personal will, but was involved in a complex political struggle. According to historical records, Cheng Jiao was the son of Qin Zhaoxiang Wang, and during Qin Zhaoxiang Wang's reign, the internal power struggle in Qin was very fierce. As the son of Qin Zhaoxiang Wang, Cheng Jiao was naturally involved in this struggle.

Secondly, Cheng Jiao's rebellion was also related to his ambition. According to historical records, after Qin Zhaoxiang Wang died, Cheng Jiao attempted to seize the throne but ultimately failed. This failure undoubtedly made him dissatisfied with the rule of Qin, and thus chose to rebel.

Finally, Cheng Jiao's rebellion was also related to his external environment. At that time, although Qin was powerful, it was surrounded by enemies on all sides. Cheng Jiao may have thought that instead of fighting hopeless battles within Qin, it would be better to ally with external enemies and jointly fight against Qin.

Overall, Cheng Jiao's rebellion was the result of the combined effects of multiple factors. His rebellion not only revealed the power struggle within Qin, but also reflected the complex political relationships between various countries during the Spring and Autumn and Warring States Periods.

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