《史记·三十世家·晋世家》
有个宠姬的哥哥叫胥童，曾与郤至有矛盾，再加上栾书又怨恨郤至不使用自己的计谋竟打败了楚军，就派人暗中向楚国道歉。
宠姬兄曰胥童，尝与郄至有怨，及栾书又怨郄至不用其计而遂败楚，乃使人间谢楚。
There was a concubine's brother named Xu Tong, who had a conflict with Xie Zhi. Luan Shu also resented Xie Zhi for defeating the Chu army without using his own strategy, so he sent someone to secretly apologize to the State of Chu.