Class A shares include subscription fees and redemption fees. The longer the holding time, the smaller the redemption fee, or even the redemption fee is zero. There is no subscription fee and redemption fee for Class C shares, but there is a sales service fee. The sales service fee is accrued daily and deducted directly from the fund assets, which is reflected in the daily net value. From the cost point of view, if investors make short-term investments, it is best to choose Class C shares, which is cheaper. On the contrary, it is better to choose Class A stocks for long-term investment.