Li Baiyao (simplified Chinese: 李百药; traditional Chinese: 李百藥) (564–647),[1] courtesy name Zhonggui (重規), formally Viscount Kang of Anping (安平康子), was a Chinese historian and an official during the Chinese Sui dynasty and Tang dynasties.[2][3] He was honored for his literary abilities,[4] and he was known for completing the official history of Northern Qi, the Book of Northern Qi, which his father Li Delin had started.[5]