Hehe, you didn't calculate the fees for buying FDUSD with USDT, did you? I used 50,000 USDT to buy FDUSD and spent 170 dollars on fees. Did the BIO I obtained amount to 170 dollars? If I exchange FDUSD back later, how much will the fees be then? Maybe by that time, 1 FDUSD can only be exchanged for 0.997 USDT. That's another 170 dollars gone. Isn't this 340 dollars money?