西汉,列侯有食县者,也有食乡、亭者,但其爵称多不带县侯、乡侯、亭侯之名,在爵级上他们也都处于同一等级。①至东汉,列侯的爵级则发生了细化,产生了乡侯、亭侯等新爵称。钱大昕论曰:“汉制,列侯所食邑为侯国。西京侯者,封户有多少,所食或尽一县,或止一乡一亭,皆以侯国称之。……后汉始定为都乡侯、乡侯、都亭侯、亭侯之差,于是有侯而不为国者矣。”②罗福颐先生《汉印文字征》中收录有一些东汉 Western Han Dynasty, Hou Hou have food county, but also food Township, Ting who, but many said it does not count County Hou, Township Hou, Ting Hou’s name, they are also at the same level in the jazz. ① to the Eastern Han Dynasty, Liehou Jue-level occurred in the refinement, resulting in township, Ting Hau, such as the new Jazz. Qian Daxin said: “Han-made, Hou Hou eatery Hou State. Xijing Hou, Feng Shou how many, eat or make a county, or only a township pavilion, all Hou Hou said. ... ... The Han dynasty began to be all township Hou, township Hou, Ting Ting Hou, Ting Hou difference, so Hou and not for the country carry on. ”“ ② Mr. Luo Fuyi, ”Chinese character sign" contains some Eastern Han