You can purchase funds by bringing your ID card and cash (bring your bank card if you have one) to the bank counter.

Give the staff your ID card and cash and tell him that you want to buy a fund. If you don’t have a bank card, you will be asked to apply for a bank card first. Generally, you need to fill out a personal account opening application form. After you are given a card, you can deposit money onto the card. Then, tell the staff what fund you want to buy, and they will open a fund account for you. Also fill out the application form with the name of the fund you want to buy, and that's it.