“闹钟挂墙上,警钟需要挂心上,”已故北京市副市长李润五同志如是说。“警钟”刘骨铭心,古来有之。东汉的杨震,面对当时的进礼风,将“要使人不知,除非己莫为”作成横匾挂在墙上,时时提醒自己公廉自持。他在迁升东莱太守途中,遇到被自己推荐当了县官的下属王密送来厚礼,当众大骂一通,并将所送礼物充公。 “Alarm clock on the wall, the alarm need to hang on, ” said the late Beijing Mayor Li Runwu, vice mayor. “Alarm ” Liu Gu Ming heart, there has always been. The Eastern Han Dynasty Yang Zhen, the face of the etiquette at that time, will be “to make people I do not know, unless it is ” made of horizontal plaque hanging on the wall, from time to time to remind myself Chelvin self-sustaining. When he was on his way to escort Dongtai governor, Wang Meiji, a subordinate of the magistrate who had been recommended by himself, came to send a thick gift, cursed a pass in public, and confessed his gifts.