《明史·列传·卷二百一十一》
山南王自从在四年献了两次贡品后，直到宣德皇帝逝世都没有再来，后亦被中山王国所吞并了。
山南自四年两贡，终帝世不复至，亦为中山所并矣。
The king of the southern mountains had, since the two tributes in the fourth year, not returned to the capital and, later on, his kingdom was annexed by the中山 Kingdom. 