After Emperor Taizong ascended the throne, he realized the greatness of the people's power from the magnificent peasant war and the reasons for the demise of the Sui Dynasty, and attached great importance to the lives of ordinary people. At the same time, we should pay attention to the management of officials, select talents and appoint people, make suggestions and reuse Wei Zhi and other ministers; And adopted policies such as taking agriculture as the foundation, practicing economy, recuperating, reviving culture and education, and perfecting the imperial examination system to stabilize the society; He also tried to pacify the invasion of foreign enemies, respected the customs and habits of border nationalities, promoted the integration of ethnic relations and stabilized the frontier. Emperor Taizong was respected by all countries in the Quartet. Khan? . During the Zhenguan period of Emperor Taizong's reign (627-649 AD), with the joint efforts of the monarch and his subjects, political clarity, economic development, social stability and martial arts flourished. Zhenguan rule? . This was the first rule of the Tang Dynasty and laid a solid foundation for the prosperity of Kaiyuan later.
In his later years, Emperor Taizong was troubled by the prince's problems. Prince Li Chenggan fought with Wang. As a result, Emperor Taizong abolished the two of them, and finally made the ninth son Wang Jin Li Zhi the prince. After the death of Emperor Taizong, Li Zhi acceded to the throne for Tang Gaozong. Tang Gaozong reigned for thirty-four years (AD 649? In 683). At the beginning of Emperor Gaozong's reign, he continued to implement various political and economic systems formulated by Emperor Taizong, supplemented by Li Shiji, Sun Chang Wuji and Chu Suiliang. They all bear in mind the wishes of Emperor Taizong, unswervingly carry out the instructions of Emperor Taizong and love the people.
When Tang Gaozong ascended the throne, he announced to the ministers:? Things that are inconvenient to the people should be noted and explained, and they will be sealed before they are finished. ? On that day, the secretariat entered the cabinet and asked the people about their sufferings; Emperor Taizong instructed him to be frugal, and Emperor Taizong called for the crime of offering eagles and the crime of offering Beijing officials and other States a dog and horse. ? The ministers of Emperor Gaozong followed the laws and regulations of Emperor Taizong, so during the reign of Emperor Yonghui, the border areas were stable (the Western Turkic khanate occupied the western regions, Goguryeo and Baekje were conquered, and most of the Korean peninsula was occupied), and the people lived in peace (the population increased from less than 3 million in Zhenguan to 3.8 million, due to Yang Di's abuse of people's power, and later the Sui Dynasty)? . In addition, during his reign, the territory of the Tang Dynasty was the largest.