What this friend said is very representative, that is, the stablecoin of the US dollar depreciates and depreciates with the US dollar without any interest income, is that correct? Actually, it's both right and wrong. The correct point is that when the US dollar depreciates (or appreciates) compared to other currencies (without comparison, there is no depreciation), the stablecoin of the US dollar will indeed depreciate (or appreciate) relative to other currencies, which is determined by DXY. The mistake is that stablecoins have interest income, but the interest income is not given to you, which is why Coinbase can provide partial subsidies. Additionally, 1 dollar of stablecoin is always equal to 1 dollar of US Treasury bonds (or US dollars), so US dollar stablecoins only appreciate and hardly depreciate against the US dollar.