Split is to return the net value to 1 yuan, but your share of the fund will increase relatively. No profit, no loss. For example, before the split, it was 5 yuan * 1, copies = 5, yuan (the handling fee is temporarily ignored). After the split, the net value is 1 yuan * 5, shares = 5, yuan, and your total investment remains unchanged.

Personally, I think that if you buy it well before the split, for example, if you buy it two days in advance, if the net value of these two days goes up, like that of 5 yuan, it will be: 5.5 * 1, points = 5,5 before the split, and after the split, 1 yuan * 5,5 copies = 5,5 yuan, and the share will be more than that bought on the split day. Of course, the net value of two days in advance may also fall, and investment is risky. The key depends on how you choose.