"Overseas Chronicles"

…The Nihon Shoki, which gives a fairly detailed account of each of the negotiations between Japanese envoys to the Sui and Tang dynasties, was written after the country's name, Japan, had been established in the 8th century, and all of the characters for Wa that may have been in the original documents used in the book were patiently changed to Nihon, as far as the country's name is concerned. If we look for sources other than the Nihon Shoki, we find in a fragment of the Overseas Kokki that a letter given to a Tang envoy who came to Dazaifu in 664 (the 3rd year of Tenchi) read, "Cho, Nihon Chinzei Tsukushi Daishogun." However, since the Overseas Kokki was also written in 733 (the 5th year of Tenpyo), it is possible that Wa was changed to Nihon. …

*Some of the terminology explanations that refer to "Overseas National Chronicles" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…遣隋使や遣唐使のそのつどの交渉について，かなり詳しく記述している《日本書紀》も，8世紀になって日本という国号が確立したのちの書物であり，その中に使われている原資料にあったかもしれない倭の字は，国号に関するかぎりすべて根気よく日本と改められている。そこで《日本書紀》以外に文献を求めると，《海外国記》の逸文に，664年(天智3)，大宰府に来た唐の使人に与えた書には〈日本鎮西筑紫大将軍牒〉とあったとある。だがこの《海外国記》も733年(天平5)に書かれているから，倭を日本と改めている可能性がある。…

※「《海外国記》」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報