Li Shimin, Emperor Taizong of the Tang Dynasty, took the people-centered thought as the core, promoted the governance strategy of frivolous corvee and low tax, humbly accepting advice, rectifying official governance, and improving the imperial examination, harmonizing the relationship between monarchs and ministers, monarchs and people, and ethnic groups, creating a governance situation of political clarity, economic recovery, cultural prosperity, and social stability, and laying the foundation for the prosperity of the Tang Dynasty.