1. Platform selection: As an investment platform, Zhang Le Fortune has established cooperative relations with some fund companies or fund managers, but not all funds. According to its own strategy and business model, the platform will select some funds from many funds for investors to buy.

2. Risk management: For the purpose of risk control and investor protection, the platform restricts the purchase of some high-risk or complex funds, which can help investors avoid excessive exposure to potentially risky investment products.

3. Legal and regulatory restrictions: According to local financial regulatory requirements, investment platforms will be restricted by some laws and regulations, including purchasing specific fund categories or types to ensure compliance and protect investors' rights and interests.