Since all of these histories were compiled and edited by the Tang, whose pedigree descended from the Northern Court, the works are said to display a tendency towards treating the various Northern Court dynasties as more legitimate than the Southern Court, who were the actual successors to the Jin dynasty.
これらは北朝の系譜に連なる唐の編纂であるが故に、晋朝の後継国である南朝よりも、むしろ北朝の諸王朝を正統として扱う傾向があったといわれる。