《北史·列传·卷三十八》
朝廷下诏命辛雄为行台左丞，与临淮王元，向东进至叶城；别将裴衍，向西打通亚鸟地一带的道路。
诏雄为行台左丞，与临淮王彧东趣叶城；别将裴衍，西通鸦路。
The imperial court issued an edict to order Xin Xiong to serve as the general secretary of the administrative office and cooperate with Yuan, the prince of Linhuai, to advance eastward to Yecheng. Another general, Pei Yan, was to advance westward and open up a path in the Yaniao area.