Wu Sangui led the Qing army into the customs, which can be said to be a famous traitorous event in history. At that time, after the Qing army entered Shanhaiguan, Wu Sangui was anathema to the Han people. Wu Sangui was originally a subordinate of Li Zicheng, but at one time he was at odds with Li Zicheng and took refuge in the Qing army, the enemy of Li Zicheng. He not only brought the Qing army into the pass, but also worshipped the ruler of the Qing Dynasty as the emperor and was willing to become a vassal of the Qing Dynasty. Perhaps it was because of temporary interests and enmity with Li Zicheng that Wu Sangui surrendered the Han nationality to the Qing army.
Of course, Wu Sangui must have been frightened by such traitorous behavior. First of all, he offended all Han people. Actually colluding with the Qing army to destroy the country of the Han nationality is a great hatred for the Han nationality. In addition, after the Qing rulers entered the customs, the Qing dynasty was established, so the Han people would be inferior to Manchu, and Manchu would be higher than Han people. As the initiator, Wu Sangui was naturally dissatisfied with the Han people. Secondly, it offended the Ming royal family. Wu Sangui led the Qing army, which led to the demise of the Ming Dynasty. Where would the Ming royal family let him go? When Li Yong asked this sentence, he touched a nerve in Wu Sangui, because he knew it was shameful to betray his motherland.
In a word, Wu Sangui is not afraid of Li Yong. He's afraid of everyone. He is afraid that he will be regarded as a traitor by everyone and become the target of everyone. As a matter of fact, Wu Sangui was assassinated many times for betraying his country, so he had to carefully arrange his guards. How can such a person live in peace if he betrays his country for the benefit?