1. At present, it is definitely not possible to purchase funds directly by credit card;

2. By withdrawing cash and then buying a money fund, the income cannot cover the handling fee and interest, nor can it;

3, only through indirect means, through the money fund to earn some income:

Try to spend money by credit card every month without paying cash. Since each consumption has a maximum interest-free period of 50 days, you can buy the money fund before the repayment date, redeem the money fund when the repayment date approaches, and return the credit card. This is the current operational "credit card+money fund" financial management method.

I hope it helps you.