Trading cryptocurrencies also requires exchanging for USDT and fiat money, to put it bluntly, those people just want money, everything else is an excuse.

Don’t believe the so-called big shots who guide you to be a U trader. Last year, my friend did U trading, buying high and selling low, and only exchanged a few tens of thousands, making a few thousand yuan in profit, and then received a warning call. Fortunately, it was not a large amount; they were just punished and did not wear silver handcuffs.
In recent years, many U traders have been caught in China!
For example, during the period from 2020 to 2021, Lin, Yan, and Xie jointly invested in a U trading gang.
The gang fully utilized the relatively anonymous nature of USDT cryptocurrency trading, the convenience of transactions, and the fact that it was not subject to real-time monitoring by traditional financial regulatory systems. They frequently conducted large-scale buying and selling of USDT on virtual currency trading platforms. They purchased USDT at low prices on foreign trading platforms, then combined online and offline methods to find customers in China who needed to exchange foreign currency, selling USDT to customers at prices higher than the market exchange rate. The customers then transferred the equivalent amount in RMB to accounts designated by the three individuals, thus completing an illegal cross-border currency exchange transaction. They were soon arrested by the police!