Platinum refers to silver in ancient times. Also refers to silver alloy currency. "Guanzi Yidu": "Zishan Platinum Swallow, One? Also. " Historical Records of Xiaowu: "Later, there was a white deer in Tianziyuan, whose skin was used as currency to make a platinum." Wu Han's Historical Records: "Tin in the cash register makes platinum and leather coins enough." Jin Dong explained Yuan's "The West Chamber" Volume I: "Fools leave no room, let alone talk about it. 50 white gold stars, we can talk about the cost of tea. "Romance of the Three Kingdoms" the ninth time: "There are hundreds of thousands of gold and millions of platinum in the collection dock, and then the front edge, pearls, utensils, food and so on. "

After the middle of Qing dynasty, it also refers to silver dollar. Wang Qingshizhen's "I Talk about Chibei, Talk about Art and Beauty": "After a day's meal, a friend keeps the cake platinum."