Emperor Taizong and Li Shimin initiated the rule of chastity and made the society prosperous. Because Emperor Taizong can be virtuous, he knows people and makes good use of them. Open the way, modestly coachable, reuse Wei Zhi, etc. And adopted the agriculture-oriented, tax reduction, rest and recuperation, strict economy, improve the imperial examination system and other policies to stabilize the society.

The rule of Zhenguan is the most dazzling period in the history of China. Zong absorbed the reasons for the demise of the Sui Dynasty and attached great importance to the lives of ordinary people. He emphasized people-oriented, and often said: "People, water is also; June, Zhou Ye. Water can carry a boat or overturn it. " At the beginning of Emperor Taizong's accession to the throne, he ordered the people to recuperate. Emperor Taizong cherished the people's strength and never collected corvees easily.