1. Fund type: Different types of funds have different risk-return characteristics. For example, equity funds usually have higher risks and returns, while bond funds are relatively stable. Therefore, when setting expectations, it is necessary to reasonably evaluate the expected returns according to the characteristics of fund types.

2. Market environment: The market environment has an important impact on the performance of the fund. In a bull market, the fund's income may be higher, while in a bear market, the fund's income may be lower or even loss. Therefore, it is necessary to consider the current market environment and future market trends and set expectations reasonably.

3. Ability of fund managers: The ability of fund managers has an important impact on the performance of funds. Excellent fund managers can get better returns through accurate stock selection and timing operation. Therefore, when setting expectations, we need to consider the historical performance of fund managers and their ability and experience.

4. Investment duration: Investment duration is also an important factor in setting expectations. Long-term investment can usually bear higher risks and have the opportunity to get higher returns. Short-term investment needs to be more cautious to ensure the safety of funds. Therefore, when setting expectations, we need to consider the length of the investment period.

To sum up, setting a reasonable fund expectation needs to comprehensively consider the fund type, market environment, fund manager's ability, investment period and other factors. Investors are advised to refer to historical data, market analysis and professional opinions when setting expectations, and make reasonable expectations according to their own risk tolerance and investment objectives.