Many banks have begun to freeze their savings cards. How can users avoid it?

I believe everyone has their own bank card. With the development of electronic payment today, our daily life will be greatly affected if there is no bank card. Although the bank card is our own, we can't use it at will. Before applying for a bank card, we have signed a bank agreement. According to the agreement, if we use the bank card to engage in illegal activities, the bank has the right to freeze our card. Recently, with the country's efforts to crack down on financial crimes, banks have also strengthened the detection of user bank cards, and many users' bank cards have been frozen. What the hell is going on here? How can ordinary users ensure that their cards are not frozen? The user's bank card is frozen, mainly for these reasons. 1. There are unknown funds in the user's bank card. For every sum of money received, we need to know where it comes from. If you receive funds from unknown sources, you'd better take the initiative to explain to the bank, otherwise the bank will freeze the card soon. 2. The flowing water in the bank is abnormal. For ordinary people, our daily traffic will not be too much. If you need to support a large amount of traffic, then you must apply to become a merchant, so that our bank card can support a large amount of expenses and income every day. If the flow direction of an ordinary bank card is abnormal, then the bank will also choose to freeze the card. Don't worry too much if our bank card is frozen for no reason. Just print our own running water and explain it to the bank. At the same time, we should also pay attention to the following points when using bank cards. 1. Bank cards should be used frequently, and a certain amount of deposits should be reserved to become active accounts. You can't keep the unknown funds for yourself. 3. Don't gamble online. Online gambling is illegal, and the money won by online gambling is often black money. The state has the right to withdraw and freeze bank cards. As long as the bank card is used normally, the bank is not qualified to freeze and develop a good habit of using the card. It should start now.