There will be a handling fee for switching between several funds in the same fund company. If it is a cross-fund company, it is equivalent to redeeming first and then purchasing, and it is even worse to pay the handling fee for redeeming and purchasing twice.

Since it is a fixed investment of the fund, when it falls, it will also buy it regularly according to the agreed date to spread the cost for you, and don't care about the temporary ups and downs.

I bought two funds around 6000. I bought it once, but now I still lose nearly 40%, and now I make a profit of more than 2000, hehe, very good.