On the fourth day of June, the ninth year of Wude in Tang Gaozu, that is, on July 2, 626, Li Shimin, king of Qin, staged a coup in Xuanwu Gate of Chang 'an Taiji Palace, aiming at seizing the throne. In the coup, Prince Li and Li Yuanji, the king of Qi, were killed successively, and Li Yuan was forced to retreat, which is known as the change of Xuanwu Gate. Zi Tong Zhi Jian recorded such a thing in July 1997, the seventeenth year of Zhenguan. Ask Fang, who is in charge of supervising the revision of national history, what did historians write in their previous lives? What happened? "
It can be seen that Li Shimin was so secretive about the history of the change of Xuanwu Gate that it interfered with the normal compilation of history by historians. Li Shimin's intervention is really effective. Biographies of the Old Tang Taizu Philosophers and Biographies of the Old Emperor Taizong have the same evaluation of Li and Li Yuanji, but the completion of Yuanji is actually the lesser of the two evils. China's diplomatic structure is inclusive of people and gods. Enlighten saints with darkness and sadness. Luck belongs to Wendi, and success is correct. Since there is a division between good and evil, society will be determined.
Obviously, after the change of Xuanwu Gate, many details were intentionally concealed by Li Shimin. As a loser, it is well known that Li's cemetery can't be luxurious. After being killed, Li was buried in Guodu Town, Chang 'an District, causing many robberies. Surprisingly, Li's epitaph is only 55 words, which only records the name, time of death, time and place of burial, and says nothing about his life and achievements. Posthumous title, who used the word "hidden", did not deliberately belittle Li. Perhaps at the last minute, Li Shimin still thought of a trace of brotherhood.