《金史·列传·卷三十六》
松军既然失败，曦于是派掌管机宜文字姚圆和吴端到纲处进表送款。
松兵既败，曦乃遣掌管机宜文字姚圆与端奉表送款。
Once Song's army had been defeated, Xi dispatched Yao Yuan and Wu Duan, who were in charge of official documents and correspondence, to Jiang to present a memorial and offer tribute.