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Cheng was the leader of the peasant uprising army at the end of Sui Dynasty, and later came to Wagangzhai. After the defeat, he surrendered to the Tang Dynasty, Xiping Turkic, and made great contributions. This man is simple, honest and frank, with an axe in his hand and often squatting in the middle of the road, so there is a saying that he is Cheng.

Cheng is a famous novel character. His original name was Cheng (Cantonese Bite) Jin, and later it was called. He came from the late Sui and early Tang Dynasties. In the novel Romance of Sui and Tang Dynasties, he was written as Cheng. He is an officer in charge of the army. He followed Shi Biao, Wang, etc. At the end of Sui Dynasty, he later followed Li Shimin to defeat the heroes at the end of Sui Dynasty. When he arrived in Tang Gaozong, he became a general, but later he was dismissed for leading an army to the west. There are rumors in the official history.