《元史·列传·卷三十三》
十九年，复拜中书左丞相。二十年十月，因失职违纪而罢官，并没收其家产之半，迁往山后。至元二十二年卒，年六十五岁。杨惟中，字彦诚，弘州人，知书，有胆识谋略，为太宗所器重。二十岁时，奉命出使西域三十余国，宣扬蒙古国威，颁布蒙古政令，使各国官民户口皆归于蒙古，太宗准备大大重用他。
年二十，奉命使西域三十余国，宣畅国威，敷布政条，俾皆籍户口属吏，乃归，帝于是有大用意。
In the nineteenth year, Zhu was again appointed as the Left Chancellor of the Secretariat. In October of the twentieth year, Zhu was dismissed for misconduct and half of his family's wealth was confiscated. He was exiled to Shanhou and died in the twenty-second year of Zhiyuan's reign, at the age of 65. Yang Weizhong, courtesy name Yansheng, was from Hongzhou, and was known for his knowledge, courage, and resourcefulness, and was favored by Emperor Taizong. At the age of 20, Yang was ordered to visit more than 30 countries in the Western Regions as an envoy, propagating the prestige of the Mongol Empire and promulgating its policies, resulting in the registration of the population of the countries to the Mongols. Emperor Taizong intended to entrust him with important responsibilities.