Purchase investment bonds, invest in real estate, issue various loans, etc.

1. Purchase investment bonds: The Social Security Reserve Fund can purchase bonds issued by national or local governments to obtain fixed interest income.

2. Investment in real estate: Funds can invest in the real estate market, including the purchase of commercial real estate, residential properties or land, etc., in the hope of obtaining returns through rental income or asset appreciation.

3. Grant various loans: Funds can provide loans to individuals, businesses or governments and obtain interest income from them.