Culture"Tongdian" written by Du You
Chief Minister Du You spent more than 30 years compiling 200 volumes of "Tongdian", which is divided into nine categories: food and goods, elections, officials, rituals, music, soldiers, punishments, states and counties, and border defense. It records the evolution of the laws and regulations from ancient times to the Tianbao period of the Tang Dynasty.
Lasting legacy"Tongdian" created the general history of the canonical system, and together with the later "Tongzhi" and "Wenwen Tongkao" are collectively known as the "Three Communications", it is still the basic classic for studying the history of institutions.