The loss of graded fund A is mainly operational loss, such as buying at 1.05 and selling at 1.0, which is caused by repeated loss-making transactions. In fact, you won't lose money if you take it for a year, and it will increase by more than 6% every year. There is also a loss, that is, the graded fund B will not be discounted. When the B level is normally discounted, the A level will rise, but the one that is not discounted will start to deduct the A level after the B level net value falls below 0.25 yuan.