Because China has very strict foreign exchange management, the functions of China Administration of Foreign Exchange are one of the most in the world. In addition, among Chinese banks, only China Bank is a foreign exchange financial institution in China, and other banks can only conduct foreign exchange business, but cannot manage foreign exchange business. With these two points, foreign exchange business can not be simple. In addition, after all, it is a transnational remittance, and the long-distance telephone signal is not good, let alone the circulation of a sum of money.