《元史·列传·卷二十四》
在武昌路政治清明，远近闻名，升为河南省郎中。成宗崩，武宗即位，河南省平章囊加台向朝廷荐举察罕，因授詹事院判，后升为佥詹事院事。派他先还大都设立詹事院，仁宗后至，对他说 ：皇上把故安西王的地方赐我，置都总管府，由卿主持总管府的事。你要慎重挑选官吏，不要因为你詹事位高，不屑于此任。
武宗即位，立仁宗为皇太子，授察罕詹事院判，进佥詹事院事，赐银百两、锦二匹。遣先还大都立院事。仁宗至，谓曰： 上以故安西王地赐我，置都总管府，卿其领之，慎拣僚属，忽以詹事位高不屑此也。
The politics of Wuchang were clean and clear, and his fame spread far and wide. He was promoted to counsellor in Henan Province. When Chengzong died and Wuzong took the throne, the Minister in Charge of Civil Administration of Henan Province, Nangjiatai, recommended Ren Chahan to the imperial court, so he was appointed a judge in the Imperial Academy and later promoted to Deputy Minister of the Imperial Academy. He was sent to Dadu to establish the Imperial Academy before Renzong arrived. Renzong later told him, "The emperor has granted me the land of the former King of Anxi, where the headquarters of the Inspectorate will be located. You will be in charge of the Inspectorate. You must choose your officials carefully, and you must not neglect this task because your position at the Imperial Academy is so high."