Reign of Zhenguan

Timeline

1. 627–628Chang'an · ShaanxiIn the early years of his reign, Taizong reformed the bureaucracy, released palace maids, cut expenditures, and heavily employed Fang Xuanling, Du Ruhui, and Wei Zheng, forming the political culture of 'Zhenguan ruler and ministers' accepting remonstrance and deliberating on governance, laying the foundation for clean administration.
2. 629–636Guanzhong and the prefectures of the Central Plains · ChinaThe equal-field system and zu-yong-diao tax system were implemented, reducing peasants' burdens and encouraging land reclamation and irrigation works; registered households and grain output rose year by year, with records stating 'the realm enjoyed a great harvest, the dispersed returned, and a dou of rice cost three coins.'
3. 630–649Territory of the Tang dynasty · ChinaThe Eastern Turkic Khaganate was destroyed, Tuyuhun conquered, and the Western Regions administered; the system of jimi (loose-rein) prefectures and protectorates was established; the imperial examination, fubing, and Three Departments and Six Ministries systems matured, national power was strong, and all quarters came to court—the Zhenguan reign reached its zenith.