《管子·匡君小匡》
这样，天下的诸侯知道桓公为他们服务，所以，诸侯归附桓公，好像去赶集一般。
于是天下之诸侯知桓公之为己勤也，是以诸侯之归之也譬若市人。
In this way, the feudal lords of the world knew that Duke Huan was serving them, so the feudal lords turned to Duke Huan as if going to a market.