The Palme d 'Or is a gimmick of bank secrecy in two provinces.

One palm of gold, also known as swallowing gold in the sleeve, is a traditional fast algorithm that has been circulated in ancient China for more than 2,000 years, and is widely circulated in China. The algorithm of "one palm of gold" is a unique skill of Shanxi Bank in Shaanxi Province. Some big merchants and shopkeepers in Xianyang and Xi 'an know this algorithm. The advantage of this calculation method is that it is convenient and quick to use the left hand as the fifth abacus and click this abacus with the right hand.