Imagine that you have made 10 million by speculating in cryptocurrencies, and now you want to exchange the money for RMB. You searched for many money exchange ads online, and finally chose a merchant that looks reliable. The merchant transfers the money to you through Alipay, WeChat, or a bank card. After you confirm that you have received the money, you tell the exchange that you can release the coins, and 1 million USDT is deposited into the merchant's account.

This process seems quite safe, because the exchange will freeze your USDT first, and then release the currency after the merchant transfers the money to you and you confirm receipt. But there is a problem here, that is, the money the merchant gives you may not be clean, which is the so-called "black money". This is a risk that you cannot avoid when exchanging money.

You may think that if the merchant promises to compensate if the card is frozen, or that the merchant is an old brand with a good reputation, is it safe? But in fact, these are not reliable. Because there are many cases showing that even if it seems fine now, a few months or even two years later, your card may be frozen because of problems with the funds in the previous transaction. Your friend encountered this situation. The card was frozen two years later. At that time, even the exchange could not be found, and it was impossible to check it.

Why is this happening? There are several reasons:

1. You don’t know whether there is any problem with the money the merchant transfers to you.

2. Even if there is no problem with the money this time, your card may be retroactively frozen because of the funds involved in the case before.

3. Even if there are no problems above, if the merchant is considered high-risk by the bank's big data analysis, and you have financial transactions with them, your card may also be frozen.

4. Finally, if funds flow in and out of your own card too frequently, which is inconsistent with your normal behavior, or if funds flow in and out quickly without being retained, it may also trigger the bank's risk control and cause the card to be frozen.

In short, even if you can find some information, it is a problem of on-chain technology, so let’s not talk about it for now. This does not mean that your transaction information on the exchange has been checked, but that your bank card has been targeted by the anti-fraud center.

The logic is this: some people gamble online, use USDT to place and place points, and then buy and sell coins on exchanges. Because they trade too frequently, their bank cards have had dealings with some bank cards monitored by the anti-fraud center, and they are targeted by big data. Most of the bank cards of currency traders are high-risk. If you trade with them for a long time, your bank card may also be marked as a "fraud" risk.

Do you understand? This is why your bank card may be blocked when exchanging money.

Xingge's real trading made 7000u in one month, with a winning rate of 74%. You can follow Xingge on the homepage. This bull market will help you start 10 times.