From a folk tale attributed variously to
张英 (Zhang Ying, Qing dynasty Grand Secretary) or his son
张廷玉: in the
六尺巷 (Six-Foot Lane) story, Zhang's family wrote him about a wall dispute with neighbors, and he replied with a poem:
千里修书只为墙,
让他三尺又何妨。
万里长城今犹在,
不见当年秦始皇 (A thousand-li letter, only for a wall — yield three feet, what harm? The Great Wall still stands today, but the First Emperor is gone). The family yielded, the neighbors yielded back, and a six-foot lane was born — still shown in Tongcheng, Anhui.