The article on Emperor Jito's visit to Yoshino in the "Nihonshoki" (Chronicles of Japan) is an article on the emperor's visits to mission troops to the Yoshino area, Saga Prefecture at the time of `the battle of Hakusukinoe' sixty years ago (the troops gathered at the sea of Areake for maintaining confidentiality, and are believed to have taken the course; from the sea of Ariake, the Goto Islands, to Kan).
『日本書紀』の持統天皇の吉野行きの記事は、ひと干支(60年)前の「白村江の戦い」時の天皇の佐賀県吉野地方への出撃部隊視察の記事である（部隊は機密保持のため有明海に集結し、有明海→五島列島→韓のコースを辿ったと考えられる）。