The unit net value refers to the current value of the fund unit, and the accumulated net value refers to the accumulated unit value since the fund issuance period. When the fund was first issued, it was 1 yuan per share. Then with the increase of income, the unit net value continues to increase (of course, it may also decrease). Every year, fund companies will pay dividends. After the dividend, that is, after you get the income, the net value of the fund unit will return to 1 yuan, and then the net value will increase again. The current net value plus the previous dividends of the fund is the accumulated net value of the fund. Therefore, the accumulated net value can reflect the historical performance of the fund to a certain extent.