Let's assume you made a billion.

If you sell a lot of U every day and do not withdraw it, reaching 5 million, the bank will call you at home to visit and ask you to buy wealth management, trusts, and insurance, and to become a VIP gold card member.

If you sell U on the platform, you will definitely encounter dirty money. Level three dirty money is not very much, frozen for 3 days, but with so much in your account, you might be frozen for half a year.

If you are dealing in second-level dirty money, it might be frozen for 6 months or even confiscated. If the amount is not too large, you might just need to compensate 10%. Then it might be resolved, but if it's too much, you might face serious consequences, and for five years, you won’t be able to use the internet, open accounts, or take loans.

If you buy U at a very low price, or if you sell U at a particularly high price, with the market price at 7 yuan and you sell at 7.5, then you are knowingly committing a crime. This is really bad. So don’t be greedy for cheap U, or sell U at excessively high prices.

If you receive first-level dirty money, there's nothing to say, straight to three years. The charge will definitely be for concealing proceeds of crime.

If you are selling U, definitely do not go to the platform. Take my advice, be cautious to avoid danger, do not go to the platform, and do not look for U merchants. Also, do not engage in offline cash transactions, as one, the cash transactions may involve a lot of dirty money, and two, your personal safety may be at risk. Do not put yourself in a dangerous situation.

You made money, I will tell you how to cash out. You find someone familiar to cash out, usually they will give you money first, you give them U, then you verify the funds. Do not take funds that have been stagnant for more than 3 days, and avoid accounts with too much frequent inflow and outflow. Normal living account transactions are fine.

You don’t need to sell everything if you made a billion, sell slowly. For example, if you cash out 10 million, then just use Alipay slowly, cashing out 200,000 every day is fine. No need to rush. Rushing to sell easily leads to problems. If possible, use other means instead of a bank card.

Many people say things like selling for Hong Kong dollars is particularly troublesome, requiring a lot of qualifications and procedural channels. Don't do it without prior knowledge.

Just because people say it can be done this way. Only say it can be used after trying.

If you sell little, the bank generally won’t ask you.

But if your card receives so much money every day, it might be non-cashiered, so you will have to go to the counter to withdraw it yourself.

There's no way around this. It's all to prevent telecom fraud and to stop your card from being borrowed by others.

If you are a person with a clean background, with no involvement in drugs or organized crime, and you sell coins to make money, and the money is clean.

The bank won't ask many questions at all. Just rest assured.

But if you have any history, they will investigate very carefully.