《元史·本纪·卷四》
因此朝廷内设立都省，以总摄宏观的纲纪法制，朝廷外则设立总司，以处理具体政务。
故内立都省，以总宏纲；外设总司，以平庶政。
Therefore, the capital province was established in the court to oversee the overall綱紀system, and the general office was established outside the court to handle specific government affairs.