Briefly describe the main sources and channels of venture capital.

Venture capital refers to all funds invested in new enterprises or entrepreneurial projects, and the main sources and channels include:

Self-owned funds, family, friends, angel investors, venture capital, bank loans, government subsidies, etc. Self-owned funds, family and friends are the initial sources of funds, usually called seed wheel. Angel investors aim to provide financial support for early-stage companies and actively participate in business decisions. Venture capital, on the other hand, provides financial support after the enterprise is more mature, usually with a large investment scale, usually millions to tens of millions of dollars. Bank loans and government subsidies are also important channels for enterprises to obtain funds.