相传乾隆皇帝下江南时,微服私访至松江,正巧遇上当地知府请客。乾隆旁若无人,径直来到宴会大厅,大模大样地入座后就大吃二喝起来。知府听说来了个不速之客,如此傲慢无礼,十分恼怒,立刻出来见他。但见他狼吞虎咽、旁若无人,便强压怒火,决定先试一试他有无才学,然后再收拾他。知府走过来对乾隆说:“我有一个上联,请你对出下联后再吃好吗?” According to legend, Qianlong Emperor Jiangnan time, micro-clothes private visit to the Songjiang, happened to meet the local governor treat. Qianlong next to no one, went straight to the banquet hall, big and large to seated after eating two drink up. The prefect heard an uninvited guest, so arrogant, very angry, immediately came out to see him. But to see him gobbled, next to no one, he pushed his anger, decided to give him a try before trying to learn, and then clean up him. Governement came to Qianlong said: “I have a couplets, you eat out after the couple eat?”