周书
Compilation began with Liu Qiu 柳虯 (502-555) in the Western Wei, who was Vice-Director of the Palace Library. Liu Qiu was assigned to compile the imperial diary in 550. Liu Qiu was succeeded by Niu Hong 牛弘 (545-610) who also worked on the imperial diary and later became Director of the Palace Library. Niu Hong compiled an incomplete history of the Western Wei and Northern Zhou. In 629 Emperor Taizong of Tang appointed a team headed by Linghu Defen to work on compiling the Book of Zhou. The other team members were Cen Weben and Cui Renshi.