The reason why Li Shimin mutinied was not that Li Jiancheng was useless, but that he had committed internal treachery

The change of Xuanwu Gate made Li Shimin become a prince, and it has to be said that Li Shimin's means are very powerful, and his heart is fierce enough, killing his own siblings and forcing his own father to abdicate, but Li Shimin's ability to govern the world is indeed impressive. However, there are many loopholes in the historical record of the change of Xuanwu Gate, according to the "Zizhi Tongjian", Li Shimin only brought 800 people when he launched the change of Xuanwu Gate, but the soldiers of Li Jiancheng and Li Yuanji, the king of Qi, added up to 4,000 people, not to mention the guards of the city gate, even if Li Shimin was the king of Qin at that time, his strength was very strong, he would not be able to enter the city gate with 800 soldiers swinging, and moreover, 800 to 4000, it was obvious that he would lose. But Li Shimin won.

Is Li Shimin really the chosen son? Obviously, this statement is not convincing. Therefore, there must be an internal response in this, and this internal response must be in an important position at the time. In the 1920s, a large number of documents were found in the Tibetan Scripture Cave in Dunhuang, Gansu Province, known as the Dunhuang Testament. In this book, there is an epitaph named Chang He, which also reveals the major reasons for the success of the Xuanwumen Revolution.

Yes, this is called Chang He's internal response at that time. Chang He was originally a native of Wen County, Hanoi, a native of the last years of the Sui Dynasty, chang He could not withstand the tyranny of the Sui Emperor, and later joined the rebel army. Later, Chang He defected to Li Mi, but in a war, the Wagang army was defeated by Wang Shichong, li Mi surrendered to the Tang Dynasty, Chang He was an entourage, and naturally followed Li Mi to join tang. Li Mi received many rewards after defecting to Tang, but in the end he betrayed the Tang Dynasty and was hunted down and killed by Li Shimin. But at this time, Chang He was still fighting for Tang's life. He also became a subordinate of Li Jiancheng, the Hidden Prince.

After the unification of the Tang Dynasty, Chang He became the Su Guard of Xuanwu Gate and the Janissaries who led the gate. From this, it can be seen that if Li Shimin wants to launch the xuanwu gate change, he must first deal with Chang He well, otherwise he will not even be able to enter the door. However, Chang He was Li Jiancheng's old subordinate, and Li Shimin wanted to kill his old master, and the history books record that Li Shimin bribed Chang He with heavy money, and promised the high-ranking official Feng Lu, and finally let Chang He agree to help the King of Qin. In this way, Li Shimin took his 800 elite soldiers into the Xuanwu Gate, and he and 9 Minxiao would ambush outside the Xuanwu Gate, so that even if Li Shimin lost his hand, the 800 elite soldiers outside the door would hack Li Jiancheng and Li Yuanji to death.

After the change of Xuanwu Gate, the Tang Dynasty was basically in the hands of Li Shimin, and according to the "Tombstone", Chang He rose all the way after the change of Xuanwu Gate, from a small Su Wei to a general of Zuo Wu Wei. At that time, the world was basically calm, there was no chance of making a battle merit, and Chang He was not a family family, and he did not want Wei Chigong to be Li Shimin's cronies like them. Therefore, if it were not for the neutral merits of the XuanwuMen Revolution, he would not have suddenly reached such a height as an inconspicuous petty official.