First, you have to choose which fund you want to buy. You can find his custodian bank online, that is, the bank where you can buy this fund, and then take your bank card and ID card and go directly to the bank to fill out the form and go through the formalities. Of course, the amount of money depends on you. Take as much as you want. After buying it, you can log on to the website of the fund company you bought online to check your account information ~ ~

Supplement: If you don't need to buy a fund, you can use your ID card and bank card directly. I just bought it the other day. Please rest assured.