《水经注·卷二十二》
城内有汉相王君造四县邸碑，碑上文字已剥落残缺，有些已看不清楚，大致意思是：现在的陈国，过去叫淮阳郡。
城内有《汉相王君造四县邸碑》，文字剥缺，不可悉识。
Within the city is a stele marking the Former Offices of the four prefectures built by the Han minister, Minister Wang, its inscription weathered and incomplete, but still legible to a certain degree. Its general theme was: the present State of Chen was previously known as Huaiyang Commandery.