Li Shimin was punished and the detailed process of completing divination.

"The Change of Xuanwu Gate" was a bloody coup launched by General Ce Tian and Tang Gaozu's second son, Li Yuan Li Shimin, near Xuanwu Gate, the North Palace of the Grand Palace in Chang 'an, Tang Dou (now Xi, Shaanxi).

In the process of Li's father and son's anti-Sui, Li and He cooperated tacitly until the establishment of the Tang Dynasty.

After Emperor Gaozu ascended the throne, Li Jian became a prince, stationed in the palace to handle affairs, and was the representative of the civil service group. Li Shimin, the king of Qin, continued to lead the military commanders to lead troops to fight, which was also the greatest contribution. [ 1]

Knowing that his merits and prestige were not as good as those of the people, the prince was afraid, so he joined forces with his younger brother, King Li Yuanji of Qi, to crowd out and frame Li Shimin. At the same time, Li Shimin Group also refused to accept the prince, and the two sides continued to fight among themselves. [ 1]

After a long struggle, Li Shimin Group gradually gained the upper hand. Finally, the design killed the eldest brother Li and the fourth brother Qi Wang Li Yuanji in Xuanwu Gate, and was appointed as the new Crown Prince. Two months later, he succeeded to the throne and was named Taizong, with the title Zhenguan.