The range of net value decline = the range of dividends. For example, if you pay dividends to 0.5 yuan for every 1 fund share, the net value of the fund will drop to 0.5 yuan on the dividend ex-dividend date. The investment income you get is the growth of the fund's net value, and dividends lead to the decline of the net value. The actual dividend is your money.
For example, if the dividend date of a fund is 2.2 yuan and each dividend is 0.6 yuan, the net value after dividend should be 1.6 yuan. But the dividend day is a working day, and the fluctuation of the market itself will also affect the net value.