Recently, I've been using U cards for arbitrage and found it quite insightful. While taking advantage of the 10% cashback promotion, I also successfully avoided the common negative premium issue with USDT—that's the key. With this set of operations, the overall return can reach around 12%. Although it's not a huge profit, the advantage is stability and relatively low risk. These detailed strategies are especially useful in a bear market, and gradually accumulating them can also be a good source of extra income.