The fourth chapter of Romance of the Three Kingdoms tells the story of Dong Zhuo's dethronement of Emperor Shao and the establishment of Emperor Xian, and Cao Cao's escape after his failed attempt to assassinate Dong Zhuo. The article describes in detail Dong Zhuo's atrocities, the resistance of ministers, and Cao Cao's trade-offs, showing the political chaos and turmoil in the late Eastern Han Dynasty. After Cao Cao failed to assassinate Dong Zhuo, in order to protect himself, he even accidentally killed his lifesaver Lü Bushe's family, which reflects his character of using any means to achieve his goals. In the end, Cao Cao fled Luoyang, laying the groundwork for the future crusade against Dong Zhuo.