If so, in the first case, it depends on the time when your friend buys the fund. If you buy it for 4 years, the income in that year is about 3%, but the CPI is 6%, plus the fund subscription and redemption fees, then this fund has not made any money.
If, in the second case, the net value of the fund at the time of redemption is much higher than that at the time of subscription, even if there is no loss.
If you have any questions, please ask.