Selling 680k USDT flagged as "involved in fraud," this situation really needs caution (avoid the pitfall)

Recently saw a real case, quite typical.
A guy was selling USDT to a merchant on an exchange, with a relatively large amount. The other party said midway they needed to switch to another card for receiving payment, and kept emphasizing, "It's all relatives' and friends' funds, no problem," and insisted on transferring the money first before releasing the crypto.
Sounds like a standard procedure, right?
But as soon as the money arrived, the card was frozen, and all 680k was marked as involved in fraud, and it was a Type I card.
More troublesome is that now trying to contact them, you can only follow the process and wait for handling. After waiting for several days, there's still no clear result, just told to keep waiting.
This issue is actually no longer an isolated case in the crypto circle.
The key point is not the "trading method," but the uncontrollable nature of the fund path itself.
Many people easily fall into the trap of:
Seeing "pay first" and letting their guard down
Seeing "friend's/relative's card" and lowering their risk assessment
Larger amounts make it easier to be led by the nose
But the reality is, once there's a problem in the fund chain, your card isn't safe just because you say so.
Let me briefly list a few key points (very realistic):
For large cash-outs, try to avoid using opaque private card paths
Any temporary card change is essentially a risk point
Once flagged as fraud-related, the process cannot be resolved quickly
There's also something many people don't know:
If the incoming funds are deemed fraud-related, in some cases they may be directly returned and deducted, not something you can definitely get back just by cooperating. $ALLO
So nowadays, in the crypto circle, doing OTC is not primarily about "how much the price difference is"
But: whether you have controlled the risk chain. $MU
A one-sentence summary:
Making money is one thing, whether the money can come out safely is another
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