Many years ago, credit card was believed to be the great improvement to facilitate people’s life, since then, people didn’t have to carry the paper money at hand, a card could pay the bill. Nowadays, with the development of technology, a more convenient way has been invented. There are all kinds of APPs in China, people can shopping online, order the food and do all kinds of business, the most important thing is that they can pay money just to click the button. In the big cities, you don’t need to take money at hand, a smart phone can solve all the problems. When you buy things, you can take out your phone and then scan the two-dimension code, the bill is paid. The foreign media reported the convenient way and they were astonished by China’s change. In the future, more Apps will be invented.