《梁书·列传·卷四十八》
因此眉分八采、目有重瞳是放勋、重华的容颜，颜面如龙、口如马口，是轩辕、皋陶的形貌，这是形体外表的区别。
是以八采、重瞳，勋、华之容；龙颜、马口，轩、皞之状；形表之异也。
Therefore, the divided eyebrows and the double pupils are the appearance of Fangxun and Zhonghua, and the face like a dragon and the mouth like a horse are the appearance of Xuanyuan and Gaoyao. This is the difference in physical appearance.