《元史·本纪·卷八》
三月初二，下诏给高丽国王王礻直，命他鼓励百姓从事农桑，并命令镇抚高丽的军民总管洪茶丘管理农事。
三月己卯，诏以劝课农桑谕高丽国王王禃，仍命安抚高丽军民总管洪茶丘提点农事。
On the second of March, an edict was sent to the King of the Goryeo, Wang Sheli, ordering him to encourage the people to engage in farming and sericulture, and commanding Hong Caxiu, the Military and Civil Commissioner-in-Chief for the Pacification of Goryeo, to oversee the agricultural affairs. 