Loans, guarantees and foreign investment from others. According to the Measures for the Administration of Investment in Basic Endowment Insurance Funds, pension funds are limited to domestic investment, and loans, guarantees and foreign investment are not allowed. The investment scope includes bank deposits, central bank bills and interbank deposit certificates; Treasury bonds, policy development bank bonds, financial bonds with credit rating above investment grade, corporate bonds, local government bonds, convertible bonds (including separately traded convertible bonds), short-term financing bonds, medium-term notes, asset-backed securities and bond repurchase; Pension products, listed securities investment funds, stocks, equity, stock index futures, treasury bonds futures. At the same time, pension funds can participate in the investment of major national projects and projects in an appropriate way.