Private equity funds can invest in the non-public offering of shares of listed companies, and private equity funds can buy shares of listed companies by opening securities accounts to participate in non-public offering, agreement transfer and block trading, and participate in mergers and acquisitions of listed companies. Private equity investment funds refer to private equity funds that invest in common shares (including private placement, block trading, agreement transfer of listed companies, etc.). ), preferred shares and convertible bonds convertible into common shares, including unlisted enterprises and listed enterprises.