In ancient times, Japan was called Wakoku 倭國, although this was more of a territorial designation for disparate polities in the Japanese archipelago. Sometime around 660 CE, the name Nippon 日本 appears in Chinese and Korean diplomatic records. After this time, Japan increasingly adopted many aspects of Chinese culture and a centralized state. There are some extant Chinese illustrations of visitors from Wakoku.
蕭繹(傳)職貢圖, 唐閻立本王會圖, 五代南唐顧德謙摹梁元帝番客入朝圖.