《水经注·卷二十一》
汝水又在左边汇合了三里水。三里水发源于北方的梁县西北，往东南流经该县老城西面，就是旧时的蕙狐聚。
汝水又左合三里水，水北出梁县西北，而东南流，径其县故城西，故惮狐聚也。
The Ru River merges with the Sanli River on its left again. The Sanli River originates from the northwest of Liang County in the north, and flows southeast through the old city of the county, which is the old Huixu Village.