《元史·本纪·卷十三》
塔海的弟弟六十上奏说 ：现在百姓及投下州的民户，都令他们到女真部去造船，而女真部又重新遣发他们当兵，徭役非常繁重。
塔海弟六十言： 今百姓及诸投下民，俱令造船于女直，而女直又复发为军，工役繁甚。
Tahai’s younger brother, Liushi, submitted a memorial to the throne, saying, “Now the ordinary households and those households that previously surrendered to the imperial court are all being ordered to go to the Jurchen territory to build ships. Yet the Jurchen territory is once more sending them to become soldiers, and their forced labor is extremely arduous.”