《宋史·本纪·卷二十三》
十四月，命刑部尚书王云陪同康王出使斡离不军，答应割让三镇，贡送礼服礼帽，尊金主为皇叔，并且敬上尊号。
乙亥，命刑部尚书王云副康王使斡离不军。许割三镇，奉衮冕、车辂，尊其主为皇叔，且上尊号。
On the 14th, the Minister of Justice, Wang Yun, was ordered to accompany Prince Kang on his mission to Wulibu's army, agreeing to cede the three towns, pay tribute to the Jin lord as his imperial uncle, and to show him great respect.