expected return = fund net value of the day × fund share ×(1- redemption fee)-subscription amount+cash dividend. According to the query of Tiantian Fund Network, the calculation method of the income of Huaan Tianxin medium and short-term debt bond C is: expected income = the net value of the fund on that day × fund share ×(1- redemption fee)-subscription amount+cash dividend, and the net value of short-term debt bond C fluctuates every day, but generally the fluctuation range is not large, and the withdrawal range is small.