In his Sexual Life in Ancient China, Robert van Gulik writes that in erotic art from the Song onwards, women are shown completely naked, but he never saw a picture in which their feet were not wrapped in binding cloths.
高羅佩在《中國古代房內考》一書中有如下的描述：「宋和宋以後的春宮畫把女人畫得精赤條條，但我從未見過或從書上看過有人畫不包裹腳布的小腳。」