《元史·本纪·卷六》
铁旗城后番官折兰派遣他的儿子天郎带着原来所接受的宪宗玺书和金符，请求改授重新任命的玺书，皇帝允从。
铁旗城后番官官折兰遣其子天郎持先受宪宗玺书、金符，乞改授新命，从之。
Zhelan, the official in charge of Houfan in Tieqi City, sent his son Tian Lang with the imperial seal and gold token he received to ask for a reissued new seal and token. The emperor approved.