Get an ABC card first, then you can open online banking at the counter, and you can buy it online when you go home! You can also go to the counter of the Agricultural Bank of China to buy it, but to be clear, not every Agricultural Bank will sell funds. You can call the Agricultural Bank for advice first!

Or you can search online. Generally, funds are sold by many banks, and many banks will sell them on a commission basis. Find a bank near your home, so it's easy to buy!