《金史·本纪·卷十五》
兴定三年正月初三，吕子羽到淮河，宋朝人不接纳他，他又回到朝中。
三年春正月庚千，吕子羽至淮，宋人不纳而还。
On the third day of the first month of the third year of Xingding, Lu Ziyu arrived at the Huaihe River, but the people of the Song Dynasty did not accept him, so he returned to the court.