During Li Shimin's reign, he actively listened to the opinions of ministers, ruled the country with courtesy at home, was modest and courteous, practiced economy, advised farmers and mulberry workers, and enabled the people to recuperate, enrich the country and strengthen the people, thus creating a famous chastity rule in the history of China. Open up the territory to the outside world, attack and destroy the East Turkistan and Xueyantuo, conquer Gaochang, Qiuci and Tuguhun, hit Goguryeo hard, and set up four towns in Anxi, where all ethnic groups lived in harmony, and were honored as "Tiankhan" by people of all ethnic groups, laying an important foundation for the prosperous years of Tang Dynasty 100 years.
Li Shimin loves literature and calligraphy, and has poems handed down from generation to generation by Mo Bao.