The foreign exchange trading function of "mobile banking" can be used to inquire about the market and entrust the sale of one freely convertible foreign currency to another. All you need to do is bring your one-card and ID card and go to any branch of the bank to apply for the function. Please select Global Service, Wealth Management and Bank * * and press OK to confirm. When columns such as "account inquiry, transfer, self-service payment, mobile consumption, securities service, foreign exchange transaction and financial secretary" appear on the screen, select "foreign exchange transaction" and press "OK" to confirm. Select an account from the accounts displayed on the screen (these accounts are preset). If there is no preset account, please select "Other CMB Account", enter your one-card account and press "OK" to confirm. "Market inquiry, entrusted transaction, entrusted withdrawal, transaction inquiry, fund inquiry and fund transfer" will appear on the screen. If you want to make a market inquiry, please select "Fund Transfer" and "Currency" and the screen will appear "Exchange:". Wait a moment, and the currency type you want to change will appear on the screen again. Select "Currency", enter the inquiry password, and the screen will display "Send information …". Waiting for the bank to return the information, the screen prompts "Read the new China Merchants Bank information?" , press "OK" to confirm. The above foreign exchange market information appears on the screen, press "OK" to confirm and finish. For entrusted transaction, please select Entrusted Transaction, select Cash or Cash, and press OK to confirm. "For sale:" appears on the screen. Wait a moment, and the currency you want to sell will appear on the screen. Select the currency, press OK to confirm, and "Buy:" will appear on the screen. Wait a moment, and the currency you want to buy will appear on the screen. Select the currency, press OK to confirm, enter the entrusted amount, enter the entrusted price, and enter. The screen displays "Send Message ...", waiting for the bank to return the message and finish. . . . . .