First of all, Cao Cao, an outstanding politician, strategist and writer in the Eastern Han Dynasty, laid the foundation of Cao Wei's regime. Cao Cao is extremely proficient in the art of war and is good at writing poems to express his lofty sentiments and ambitions. Cao Cao's poems are generous and sad, and Cao Cao's prose also creates the famous Jian 'an literature. In the Political Department, Cao Cao also eliminated Yuan Shu, Yuan Shao, Liu Biao, Ma Chao, Han Sui and other opposing forces. Even Cao Cao's northern expedition wiped out the Xiongnu, Xianbei and other ethnic minorities. Finally, unify the north, implement the system of reclaiming farmland, and restore the economic level and social order. Administratively, he built water conservancy projects and rewarded agriculture and mulberry, which gradually restored the economy of the vast areas of the Central Plains to the level before the troubled times.
The other is Li Shimin, Emperor Taizong. During the reign of Li Shimin, he was good at listening to the advice of ministers. Under his humble education, he encouraged farming and attached importance to the development of agriculture, which gave the people a chance to be trimmed after the chaos of Sui and Tang Dynasties. Li Shiming lived in that period, which was even later called the rule of chastity by historians.
At the same time, Li Shiming defeated East Turkistan and conquered minorities such as Gaochang, Qiuci and Koguryo. The Tang Dynasty was a period of great ethnic integration. It is because of Li Shimin that all ethnic groups can live in harmony. Li Shiming was even honored as "Tiankhan" by ethnic people.
It can be said that Li Shimin laid a very important foundation for the prosperity of Kaiyuan in the Tang Dynasty. Without Li Shimin, there would be no prosperity like that in the Tang Xuanzong era. In addition, according to legend, Li Shimin's words and poems were also the best in the world at that time. Li Shimin even collected the original works of many famous literati in the world.