1, design of rolling holding: The operation mode of long letter holding short debt C for 30 days means that investors can subscribe for the fund on every open day, but the redemption of fund shares needs to wait for 30 days. This design can provide some liquidity for investors and encourage them to make long-term investments.

2. Performance of the fund manager: The performance and experience of the fund manager are very important to the performance of the fund. If the fund manager can effectively manage the fund, holding long-term letters and rolling short-term debt C for 30 days will bring stable income.