《袁氏世范》记载:鲁南子独处一室,雨夜,邻居美妇因屋坏前来躲避,鲁男子闭门相拒。美妇说,可学柳下惠。鲁南子说:“柳下惠固可,吾固不可,吾将以吾不可学柳下惠之可。”这位鲁南子颇有自知之明,唯恐抵挡不住美色诱惑,故以闭门之法固守。李汝珍的《镜花缘》中曾描写过一个“自诛 “Yuan World Fan” records: Lunar son alone in a room, rainy night, neighbors, the United States to come because of housing estates to avoid the bad, Lu men behind closed doors. Beauty woman said that you can learn Liu Hui. Lu Nanzi said: “Liu under the benefits can be solid, I firmly, I will not learn to teach under the benefit of Liu.” The Lon Nanzi quite self-knowledge, lest we can not withstand the temptation to beauty, so the law behind closed doors Stick. Li Ruzhen’s “Mirror Flowers Edge” had described a “self-punishing.”