《金史·列传·卷二十一》
辽王宗干一向知道通古的名气，爱惜他的才学，派人去告诉他要他自理。
辽王宗干素知通古名，惜其才，遣人谕之使自理。
Liao King Zonggan had always known of Tong Gu's reputation, cherished his talent, and sent someone to inform him to take care of himself.