《资治通鉴·汉纪·汉纪三十六》
北匈奴派使者到武威郡请求和亲。光武帝召集公卿在朝堂商议，决定不下。
北匈奴遣使诣武威求和亲，帝召公卿廷议，不决。
The Northern Huns sent an envoy to Wuwei郡to ask for a marriage alliance. Emperor Guangwu summoned the Dukes and Ministers to deliberate in the court, and decided not to accept.