From now on, be extra cautious when buying U

Previously flagged U would just be frozen after entering the exchange, and it was very slow, almost nothing happened in the wallet
But now Tether has optimized the recognition and flagging algorithm
Addresses that have previously received flagged U have a chance to be frozen
Tether has made a profit, but everyone with U in their wallet is no longer at ease
After all, this U, transferred back and forth, is hard to say whether it has ever been associated with flagged addresses
Decentralization is gradually turning into a joke
Anonymous transactions are no longer anonymous
It's hard to say whether this is industry progress or regression
In any case, be especially careful with offline U transactions in the future