《元史·列传·卷八十六》
平时手不释卷，对天文、地理、律历、度数，无不通究，对篆隶等书法尤其在行。
平居书册未尝释手。天文、地理、律历、度数，靡不通究，尤工于篆隶。
He was usually immersed in books, and he was proficient in astronomy, geography, lunar calendar, weights and measures, and especially good at seal and clerical scripts.