《天工开物·下篇·五金》
今天中国供人使用的铜，要算西部的四川、贵州两省出产为最多，东南多是从国外由海上运来的，湖北省的武昌以及江西省的广信，都有丰富铜矿。
今中国供用者，西自四川、贵州为最盛。东南间自海舶来，湖广武昌、江西广信皆饶铜穴。
Today, the greatest suppliers of copper in China are Sichuan and Guizhou provinces in the west, with a lot also being imported from overseas in the southeast; Wuchang in Hubei province and Guangxin in Jiangxi province both have abundant copper mines.