Explanation: Refers to the old women's feet. Socks with shoes, a small bow. " Source: Qing Li Yu, "Xian Qing Ou Ji exercise" with "Pipa Xunfu" to the care of socks without shoes bow light; say can not afford to show their faces. Piper's hand aside, the original non-Ziqian to appeal the Zhongchang one. "