《明史·列传·卷二百一十一》
第二年，中山王派其国相的儿子到国子监学习，并上奏说： 右长史王茂辅佐我有些年头了，请求朝廷允许我将他提升为国相。
明年，中山遣国相子及寨官子入国学，因言： 右长史王茂辅翼有年，请擢为国相。
The following year, King Zhongshan sent his prime minister’s son to Guozijian for study and submitted a memorial that said:  “My chief secretary Wang Mao has assisted me for many years. Please allow the court to permit me to promote him to prime minister.”