Which Tang government institutions had already been established by Emperor Gaozu?

Emperor Gaozu was not merely a figurehead; he was instrumental in establishing the foundational institutions of the Tang state, which provided the framework for its long-term stability.12

The central administration established by Gaozu was structured around a system of ministries, boards, courts, and directorates, a design that mirrored the administrative model of the Sui dynasty.12

Beyond this central structure, Gaozu implemented several critical systems that defined the Tang state:

• Legal Codification: In 624, Gaozu completed a comprehensive codification of law, which included a code of fixed penalties, statutes for administrative law, regulations, and procedural ordinances.3
• Fiscal and Land Systems: He maintained the equal-allocation land system and a corresponding tax system based on grain, cloth, and labor service.3
• Monetary Policy: He established mints to produce a standardized copper currency.3
• Local Administration: He continued the Sui pattern of local government, maintaining strict central control over provincial appointments while overseeing prefectures and counties that were responsible for registration, land allocation, tax collection, and the maintenance of law and order.12