In January 1268, envoys from Goryeo visited the Dazai-fu (a local government office in Kyushu region) with an official demand from the Mongolian Empire that it become subject to their rule, which was forwarded to Kamakura.
文永5年（1268年）正月、高麗の使節がモンゴルの国書を持って大宰府を来訪、蒙古への服属を求める内容の国書が鎌倉へ送られる。