《汉书·志·沟洫志》
中国河流平原上百数，没有比四渎更著名的了，四渎中又以黄河作为宗主。
中国川原以百数，莫著于四渎，而河为宗。
There are hundreds of river plains in China, none of which are more famous than the four floods. Among the four floods, the Yellow River is the suzerain.