杜佑
Du You () (735 – December 23, 812), courtesy name Junqing (), formally Duke Anjian of Qi (), was a Chinese scholar, historian, and politician. He served as chancellor of the Tang Dynasty. Du was born to an eminent aristocratic family in what is now Xi'an, Shaanxi, almost eighteen years before the abrupt rebellion of An Lushan, and received office for the privilege as administrator of Chi-nan commandery (modernly Licheng District). Robert G. Hoyland considers him a "political thinker on a grand scale," comparable to Ibn Khaldun, but he is most often remembered for his thirty-six year compilation of the "Tongdian," a historical encyclopedia of 200 sections (volumes) collecting laws, regulations, and general events from ancient times to his own.