《搜神记·卷七》
到永嘉年间，渐渐地不做那种缝了，并把它叫做没有帽舌头的便帽。而妇女扎头发，那宽松的程度更厉害，发髻的硬度不能使自己竖立，头发都披在前额上，只有眼睛露出来而已。 无面 ，是惭愧之辞，盖住了前额，是惭愧的容貌。
至永嘉之间，稍去其缝，名 无颜帢， 而妇人束发，其缓弥甚，紒之坚不能自立，发被于额，目出而已。无颜者，愧之言也。覆额者，惭之貌也。
By the Yongjia era, the hats were gradually made without the stitch and referred to as a peakless cap. The width of the hair bun for women became exaggerated and the firmness of the bun was unable to hold itself upright. All the hair was draped across the forehead, with only the eyes remaining exposed. "No face" is a euphemism for shame. To cover the forehead is a shameful appearance.