《明史·列传·卷二百一十》
宋代以前他们都与中国有来往，向朝廷朝贡不绝，其事以前各史籍均有记载。
宋以前皆通中国，朝贡不绝，事具前史。
Before the Song Dynasty, they all had dealings with China and never stopped paying tribute to the imperial court, which is recorded in the historical records of the past.