"Add" is actually "buy", which is called "subscription" in fund transactions.

If you have already purchased Huaxia bonus before, then the process of continuing to purchase is the same as before.

For example, you bought the fund through bank online banking, or you have to log in to the online banking system, find the fund supermarket or fund financing channel, find the Huaxia bonus of the fund, and click subscribe or buy at the back. Then enter the purchase amount and confirm.