《金史·本纪·卷十五》
十八日，右司谏兼侍御史许古上奏章，请求首先派使者与宋朝议和。
壬戌，右司谏兼侍御史许古上疏，请先遣使与宋议和。
On the 18th, Xu Gu, the Imperial Censor, submitted a memorial requesting that an envoy be sent to negotiate peace with the Song Dynasty first.