Angel investment funds generally specialize in investing in some start-ups, similar to venture capital, but there are no or few harsh conditions that venture capital will have. The main purpose is to help enterprises grow.
Generally speaking, funds in the market are issued and managed by fund companies. The main behavior is to collect idle funds in the market, and then put them into the stock market, bond market or other markets, and professionals are responsible for taking care of them, so that people who buy funds can make profits.
Your question is rather general. I'm not sure which funds you are asking about, because there are some caring organizations, such as One Foundation in Jet Li. If it is a fund in the market, the famous one in China is Huaxia Market Selection, and there are Soros Quantum Funds abroad. When it comes to angel investment or venture capital, there are red shirt capital and so on.
I hope the above answer will satisfy you. Thank you.