Li Shimin, Taizong of the Tang Dynasty (January 28, 598 AD - January 23, 599 - July 10, 649 AD), whose ancestral home is Longxi Chengji, was the son of Emperor Gaozu of the Tang Dynasty Li Yuan and Empress Dou. The second son of the Tang Dynasty, the second emperor of the Tang Dynasty, an outstanding politician, strategist, military strategist, and poet. Li Shimin joined the army as a young man and went to Yanmen Pass to rescue Emperor Yang of Sui Dynasty. After the establishment of the Tang Dynasty, Li Shimin served as Shangshu Ling and General Youwuhou. He was named the Duke of Qin and later the King of Qin. He led his troops to put down warlords such as Xue Rengao, Liu Wuzhou, Dou Jiande, and Wang Shichong. During the establishment and unification process of the Tang Dynasty, Zhongli made great military exploits. On July 2, 626 AD (the fourth day of June in the ninth year of Wude), Li Shimin launched the Xuanwu Gate Rebellion, killing his elder brother Prince Li Jiancheng, fourth brother Qi Wang Li Yuanji and two other princes, and was established as the prince. Tang Dynasty The great ancestor Li Yuan soon abdicated, Li Shimin ascended the throne, and changed the Yuan Dynasty to Zhenguan. 3. After Li Shimin became emperor, he actively listened to the opinions of his ministers, governed the world internally with civility, accepted advice with an open mind, practiced strict economy, and encouraged farmers to teach farming, so that the people could recuperate and live in peace, and the country and the people were peaceful, creating the famous Zhenguan rule in Chinese history. Expanding territory, conquering the Eastern Turks and Xueyantuo, conquering Gaochang, Qiuci, and Tuyuhun, severely damaging Goguryeo, and establishing the four towns of Anxi. All ethnic groups lived in harmony and were honored as Tian Khan by the people of all ethnic groups. Many years of prosperity have laid an important foundation. On July 10, 649 AD (the end of May in the 23rd year of Zhenguan), Li Shimin died of illness in Hanfeng Hall at the age of fifty-two. After reigning for 23 years, he was named Taizong and was buried in Zhaoling. . Li Shimin loved literature and calligraphy, and his calligraphy treasures have been handed down from generation to generation. 4 (Picture source 5 in the overview)