This can be based on personal hobbies. If you want high returns, you can invest in index funds in financial management, and the risk will be relatively high.

If you don't want to take too high risks, you can invest in some money funds. Although the income is not as high as that of index funds, the individual risk is the lowest, and the income is higher than the bank interest.

You can also invest in regular financial management and insurance financial management. You can go to this platform to find out what kind of products you are suitable for investment.