《元史·本纪·卷五》
十五日，刘秉忠、王鹗、张文谦、商挺说 ：燕王既然署理了宰相的职衔，就应该在中书省内另外安排一个职位，每个月去一两次，执掌、管理朝廷的政务。
丙辰，刘秉忠、王鹗、张文谦、商挺言，燕王既署相衔，宜于省中别置幕位，每月一再至，判署朝政。
On the 15th day, Liu Bingzhong, Wang E, Zhang Wenqian, and Shang Ting said: “Since the Prince of Yan is acting as Imperial Chancellor, an additional position should be set up within the Secretariat Province for him so that he could go one or two days each month to handle and manage the government affairs.”