I think that when the country's balance of payments is in deficit, part of its foreign exchange reserves should be used to maintain the balance of payments, and then the country's foreign exchange reserves will be reduced; On the contrary, we should increase our foreign exchange reserves.

If the country's currency appreciates, I think the country should reduce some foreign exchange reserves, which can reduce the country's exchange losses at this time; On the contrary, this country should increase some foreign exchange reserves, and at this time, it can also reduce the exchange losses of this country.