Li Shimin was the actual founder of the Tang Dynasty. It was Li Shimin who killed heroes from all walks of life and stifled rebellions everywhere. With Li Shimin's ability and prestige, he deserved to be emperor. It is precisely because of Li Shimin's brilliant exploits and high prestige in the army that Tang gaozu and Cheng Jian were on pins and needles and determined to get rid of them. Tang Gaozu hoped that Li Shimin would help him fight in the south and the north, but he could not seize power and usurp the throne. As a prince, Li's influence on the army is very limited, but his strongest competitor. As soon as the father and son joined together, they planned to deprive Li Shimin of military power step by step, and then put Li Shimin under house arrest for life. If there is a war, Li Shimin will take the lead; if there is something good, Li Shimin will stand by.
Li Shimin, with his exploits, is a director of the government. The family of the King of Qin equals the family of the Prince. There are many counselors in the family of the Prince and many warriors in the family of the King of Qin. As the saying goes, there are no two days, and the people have no two masters. The contradiction between Qin Gong and the Prince's Mansion is becoming more and more difficult to reconcile. With the support of Tang Gaozu, it plans to strike first and prepare to solve Li Shimin by force. Hearing the news, Li Shimin, with the support of the military commander, decided to strike first. They bribed the commander-in-chief of Xuanwu Gate and set up a tight encirclement in Xuanwu Gate, with the aim of killing Prince Li Chengjian and Qi King Li Yuanji in one fell swoop. Many families in Qin Gong will strive to kill the enemy and set up guards. Li Yuanji's three arrows were dodged by Li Shimin, and then Li Shimin's two arrows were shot and caught by Yuanji.
After the death of Yuanji, the pro-Wangfu and pro-Wangfu besieged the Qin government, and Chang 'an was clamoring. Li Shimin entered the palace directly, saying that he had broken up with Yuan Ji. Tang Gaozu lost two sons and didn't want to lose Li Shimin, so he made Li Shimin a prince. After Li Shimin got the position of prince, he made a foolish move, forcing Tang Gaozu to abdicate and become the father of the emperor. The sons of Jiancheng and Yuanji were all killed by Li Shimin, and the wives and concubines were chosen by Li Shimin, while the daughters were not killed or raised, to show the gratitude of the emperor! Yuanji's beloved wife Yang later became his beloved princess and gave birth to a son.