E Fund's share A classified by SSE 50 Index, one-year fixed deposit interest rate (after tax) +3.00% annual agreed income, and the share ratio of A and B is 1: 1, which is converted once every operating year. If it is less than 3 months since the last fund share conversion, there is no need to convert. The discount threshold is that the net value of the parent fund is greater than 1.5, and the discount threshold is that the net value of B is less than 0.25. Graded funds can realize diversified investment strategies through the combination of options, SSE 50 futures and SSE 50ETF.