《水经注·卷三十七》
又往东流到苍梧郡猛陵县，称为郁溪，又往东到高要县，称为大水。
又东至苍梧猛陵县为郁溪，又东至高要县为大水。
It then flows eastward to Mengling County in Cangwu Commandery, where it is called the Yuxi, and then eastward to Gaoyao County, where it is called the Dashi.