The Book of Northern Qi, was the official history of the Chinese dynasty Northern Qi. It was written by the Tang Dynasty historian Li Baiyao and was completed in 636. It is listed among the official Twenty-Four Histories of China. The original book contained 50 chapters but it was found during the Song Dynasty that only 17 chapters were intact. The rest are lost.
Li Baiyao(564–647), courtesy name Zhonggui, formally Viscount Kang of Anping, was a Chinese historian and an official during the Chinese dynasties Sui Dynasty and Tang Dynasty. He was honored for his literary abilities, and he was known for completing the official history of Northern Qi, the Book of Northern Qi, which his father Li Delin had started.