《汉书·志·地理志上》
比阳县，平氏县，《禹贡》上的桐柏大复山在东南，进从造裹流出，向东南到继流入大海，经过四个郡，行程三千二二百四十里，到直业河。
比阳，平氏，《禹贡》桐柏大复山在东南，淮水所出，东南至淮浦入海，过郡四，行三千二百四十里，青州川。
Biyang County, Ping shi County. The Tongbai Dafu Mountain in "Yu Gong" is in the southeast, Jin flows out from Zaowu and enters the sea to the southeast, passing through four counties and traveling 3,224 li to Zhiye River.