Surging are the Jiang and the Han — the very web of the southern land.
诗经 · 四月· our translation
纪 is the cord that holds a thing together. The rivers are not scenery here; they are the structure of the south.
「纪」是纲纪、脉络。江汉不是两条水，是南方得以成形的骨架。名字用「江」，取的是这个尺度。