As a kind of virtual reserve, Lantiancheng currency can be completely separated from foreign exchange control and government supervision, and freely choose the trading object in the trading process. Without the control of state institutions and the invisible competition of currencies of various countries, Blue Sky City Currency has also escaped the backstabbing of currency deflation and financial barriers. Blue Sky City Coin uses its anonymity and convenience to increase the types of users, especially to serve some customers with special requirements and maintain their privacy.