Most of the heroes in Lingyange were killed and demoted. Why is the troublemaker Cheng all right?

Careful observation will reveal that all the members of Guanlong Group were killed, but Cheng did not belong to Guanlong Group and made no mistakes, so he was safe and sound when others were demoted. The demise of the Sui Dynasty was closely related to the Guanlong Group, which had influenced the history for nearly 400 years. Even Li Yuan was once one of the important figures of Guanlong Group. After the establishment of the Tang Dynasty, Li Shimin, including the later emperors, began to take strict precautions against Guanlong Group to ensure that future generations could stay in China forever and sit back and relax.

Only the people of Guanlong Group, such as the grass-roots military commanders, those who have not settled down, etc., are laid hands on, and Cheng is included in these people. Cheng was a Kanto son of Beiqi, not a grass-roots military commander, but at that time, the Kanto son had declined and posed no threat to imperial power, so he was not treated. This is the reason why Cheng was not exiled and relegated. Not only that, his eldest son Cheng Chumo also became a Duke of Lu, and his second son Cheng Chuliang married princess royal, the daughter of Emperor Taizong, and became a relative of the country.

During Wu Zetian's reign, in order to fight against Guanlong Group, she issued an order to start applying the "imperial examination system". Before and after Wu Zetian ascended the throne, Cheng did not have any conflict with her, and Cheng had a high reputation in the hearts of the people. Killing him is not good for Wu Zetian, so spare him. I have to say, Cheng is really lucky. Even Cheng who made a mistake was not executed. He was only suspended for a few days because he got rich, so luck is sometimes a kind of strength.

In fact, most of the 24 heroes of Lingyange died in the period of Wu Zetian, including Sun Chang Wuji. He helped Li Shimin ascend to the throne and participated in the change of Xuanwu Gate. Although he helped Li Zhi, his influence frightened Li Zhi and finally forced him to commit suicide. In his later years, Prince Li Chenggan led a rebellion, and the hero of Lingyange was involved in it and was finally killed. Cheng can keep his original appearance in the crowd, and he didn't participate in the rebellion. He used the image of a big fool to dispel the emperor's doubts about himself. The same is true, which makes him unique among the ministers of Lingyange.