郑人买鞋,宁可相信自己事前量好脚的尺寸,也不愿意亲自用脚试穿。典出韩非子・外储说左上。后用以讥讽墨守成规而不重视实际状况的人。
英语 the man who rather trusted his measurements than placing and confidence in his own feet when buying shoes