Li Shimin had obtained the throne through the Xuanwu Sect. On July 2, 626, Li Shimin launched the Xuanwu Gate Rebellion, killed the Crown Prince Li Jiancheng, and seized the throne of the Tang Dynasty. The coup took place near Xuanwu Gate in Chang 'an, the capital of the Tang Dynasty. It was a bloody coup. Li Shimin ascended the throne two months after the incident at Xuanwu Gate and became Emperor Taizong of the Tang Dynasty, starting the Zhenguan reign of the Tang Dynasty that lasted for more than 20 years.
Li Shimin ascended the throne in 626 A.D. and became Emperor of the Tang Dynasty.
When Li Shimin ascended the throne, Li Chengqian was eight years old.
Li Shimin's eldest son, Li Chengqian, was a rebellious crown prince. After he became an adult, he indulged in sensual pleasures and lived an extravagant life. He liked to play the role of Turks, imitating their customs, and even stealing cattle and horses to eat with others. Although Li Shiming had educated and nurtured him, as time passed, the relationship between Li Chengqian and Li Shiming became tense. He had a foot disease, which made him anxious about his future. Coupled with the instigation of some people, Li Chengqian finally planned a coup and tried to force Li Shimin to abdicate. However, Li Shi Min did not execute him. Instead, he abolished his position as Crown Prince and re-established a Crown Prince to protect his life. The search results did not provide any specific information about Li Chengqian's ending.
After Li Shimin ascended the throne, he was granted the title of King of Qin and was given the title of Shangshu Ling, General of the Right Marquis, and Yongzhou Mu. He was a prince.
Li Shimin seized the throne through the coup of Xuanwu Gate. In this coup, he killed his elder brother Li Jiancheng and younger brother Li Yuanji, then forced his father Li Yuan to abdicate and finally became the emperor of the Tang Dynasty. This coup was the key to Li Shimin's ascension to the throne.
Li Shimin succeeded in ascending to the throne through the coup of Xuanwu Sect. In this incident, Li Shimin killed his two brothers, Li Jiancheng and Li Yuanji, and then became the emperor. The theory of Li Shimin usurping the throne was still inconclusive, but his performance after he ascended the throne was outstanding and he was regarded as a model of feudal governance. The reason why Li Shi Min was able to ascend to the throne was because he had great prestige and actual military power in the army. In addition, he had also surpassed his competitors by studying hard and cultivating his power, and finally succeeded in ascending to the throne.
Li Shi Min passed the throne to Li Zhi.
Li Shimin's heir to the throne was his third son, Li Zhi, who later became Emperor Gaozong of Tang Dynasty. During his reign, Li Zhi continued to implement his father's policies to maintain the stability and development of the country.
The reason why Li Shimin killed his brother and seized the throne during the Xuanwu Sect mutiny was still unclear. The information about why Li Shimin did not dare to kill his father was not clear. Although some documents mentioned that Li Shimin might have the intention to kill his father, the specific reason has not been revealed. Therefore, there was no conclusive answer to this question.
Li Shimin's act of killing his brother and father was known as the "Xuanwu Gate Incident".