清王朝建立之初,各铸钱局主要依靠收买废铜旧钱及旧铜器作为铸钱原材料。尽管废铜旧钱及旧铜器价格非常低廉,各钱局也因此获得大量铸钱利润,但收买废铜旧钱及旧铜器毕竟不能作为各铸钱局长期稳定可靠 At the beginning of the establishment of the Qing Dynasty, all the money-casting bureaus mainly relied on the acquisition of used copper and old bronze coins as raw materials for casting money. Although the old scrap copper and old copper prices are very low, so the money bureau also received a lot of casting profits, but the acquisition of old copper and old copper scrap money, after all, can not be used as a long-term stability of the Casting Money Bureau