《明史·志·卷四十二》
于是杨一清等详细讨论： 衮衣礼冠等服饰，自从黄帝、虞帝以来，玄色上衣黄色下裳，制作十二种图纹。
于是杨一清等详议： 衮冕之服，自黄、虞以来，玄衣黄裳，为十二章。
Thus Yang Yiqing made a detailed discussion: All dresses, such as ceremonial gown and capped bonnet, have been black top and yellow bottom, and made with twelve patterns since the time of Yellow Emperor and Emperor Yu.