Hello, ICBC's electronic password card is in coordinates, horizontal abcdefg, vertical hijklmn. When trading, you will be prompted to enter the password of the password card, and he will give you the standard, such as a3j2. Then you can find the numbers corresponding to these two vertical and horizontal coordinates, such as a3 corresponding to number 32 and j2 corresponding to number 53. You can then enter 3253 to complete the payment. Try it, you don't understand.