唐代  隋唐(570 AD～628 AD)

 history books written is biographical style： 《南史》 《北史》 Read works of Li Dashi at 历史大观

　　Phase states (Anyang, Henan Province today) people, the late Southern historian from the Sui and the Tang. He believes that Northern and Southern Dynasties the DPRK's dating history, as isolated, notes repeat, the lack of contact, intended use of chronological and wrote "History of Southern Dynasties" and "Northern History", to the Southern and the North generations of history, namely, system code in these two History book into. Sui, Master Li has participated in the establishment of peasant uprising in the summer of Picea regime leaders, Ren Shang Shuli Department of assistant minister. Therefore, in the Early West will be exiled to the state (now Gansu Province), back after Yu She died two years Zhen Guan Tang (AD 628), written by "History of Southern Dynasties" and "Northern History" not a book. Since then, the Li Yanshou continue Zhuancheng collectively as the "North-South history."