The Book of Song (宋書, Sòng Shū) is a historical text of the Liu Song dynasty in China.
Text[]
Songshu, ch. 29[]
Chinese original[]
角端者，日行萬八千里，又曉四夷之語，明君聖主在位，明達方外幽遠之事，則奉書而至。
English translation[]
Jiao duan traverses eighteen thousand li in a single day and understands the languages of the four barbarian regions. When a wise and virtuous ruler ascends the throne and has knowledge of matters beyond the borders in distant lands, it will arrive bearing a letter.