Fund income = unit net value on redemption date × share.

For example, if fund A has a net worth of 0.8 and buys 1 0,000 copies, it is 800 yuan. When the fund falls 1%, it can be calculated that the net value of fund A is 0.8 *( 1- 1%)= 0.792, so the net value of fund A is now 0.792 * 652.