云杜 = 云土 ？
《禹贡 – Tribute of Yu》
English translation: James Legge
Tribute of Yu:
(Mount) Jing and the south of (mount) Heng formed (the boundaries of) Jing Zhou. The Jiang and the Han pursued their (common) course to the sea, as if they were hastening to court. The nine Jiang were brought into complete order. The Tuo and Qian (streams) were conducted by their proper channels. The land in (the marsh of) Yun (became visible), and (the marsh of) Meng was made capable of cultivation. The soil of this province was miry. Its fields were the average of the middle class; and its contribution of revenue was the lowest of the highest class. Its articles of tribute were feathers, hair, (elephants’) teeth, and hides; gold, silver, and copper; chun trees, wood for bows, cedars, and cypresses; grindstones, whetstones, flint stones to make arrow-heads, and cinnabar; and the jun and lu bamboos, with the hu tree, (all good for making arrows) – of which the Three Regions were able to contribute the best specimens. The three-ribbed-rush was sent in bundles, put into cases. The baskets were filled with silken fabrics, azure and deep purple, and with strings of pearls that were not quite round. From the (country of the) nine Jiang, the great tortoise was presented when specially required (and found). They floated down the Jiang, the Tuo, the Qian, and the Han, and crossed (the country) to the Luo, whence they reached the most southern part of the He.