话说唐朝时期，扬州城举办了一场盛大的灯会，吸引了无数人前来观看。其中一位书生李白，慕名而来，想一睹灯会的盛况。当他来到扬州城时，恰逢灯会最为热闹的时刻，只见彩灯璀璨，人山人海，热闹非凡。李白穿梭于人群之中，欣赏着各种精美的灯彩，感受着节日喜庆的氛围。他被眼前的盛景所震撼，不禁感叹道：“此情此景，真是让人流连忘返啊！”他写下了流传千古的诗篇，记录下这难忘的夜晚。回到家中，李白仍沉浸在灯会的喜悦之中，他时常向朋友们讲述当晚的盛况，字里行间都充满了对这次盛会的赞叹之情。后来，人们便用“躬逢其盛”来形容亲身经历那种盛况。
huashuo tangchao shiqi, yangzhou cheng jubanle yichang shendade denghui, xiyinle wushu ren qinglai guan kan. qizhong yiwei shusheng li bai, muming erlai, xiang yidu denghui de shenghuang. dang ta laidao yangzhou cheng shi, qiafeng denghui zuiwei renao de shike, zhijian caideng cuican, renshanrenhai, renao feifan. li bai chuansuo yu renqun zhizhong, xinshangzhe gezhong jingmei de dengcai, ganshouzhe jieri xiqing de fenwei. ta bei yanqian de shengjing suo zhenhan, bujin gantan dao：'ciqingcijing, zhen shi rang ren liulianwangfan a！' ta xie xia le liuchuan qiangu de shi pian, jilule zhe nanwang de yewan. huidao jiazhong, li bai reng chenjin zai denghui de xiyue zhizhong, ta shi chang xiang pengyou men jiangshu dang wan de shenghuang, zilixingjian dou chongmanle dui zheci shenghui de zantan zhiqing. houlai, renmen bian yong 'gongfengqisheng' lai xingrong qinshen jingli na zhong shenghuang.