China Bank's foreign exchange two-way treasure is a firm foreign exchange transaction, not a personal foreign exchange margin transaction. Foreign exchange margin means leverage. For platforms such as Fuhui, ASJ and Jiasheng, the maximum leverage is generally 400 times. In other words, a dollar can be bought in 400 yuan, while the Bank of China has no leverage, so a dollar can only be bought with a dollar. If you have money, you have to prepare 30 thousand RMB. If it is too small, it is easy to explode. If you have a foreign exchange deposit, the minimum is usually several thousand yuan. The spread is around 10 in China Bank and around 1 0 in international banks such as Deutsche Bank. The banker of foreign exchange margin is usually around 3 o'clock. It's fucking dark to work for the bank for nothing. It's up to you. Besides, an inter-bank account like Deutsche Bank can't be opened without 300,000 RMB. Again, your own money is up to you.