Introduction of Palme d 'Or

The Palme d 'Or is a folk quick calculation method and a numerical calculation method invented by ancient Qin Jin merchants in China. In ancient times, the sleeves of clothes were large, and only two hands were seen in the sleeves when calculating, which was called swallowing gold in the sleeves. There used to be a ballad about this calculation method; "Swallowing gold on the sleeve is as wonderful as a fairy, and the number of fingers is moving. You learn priceless treasures, but your bosom friends don't pass them on."