When encountering a frozen card due to criminal investigation, don't panic. Here are a few tips to deal with it:

1. If the card is not frequently used and has very little balance, and you don't want to worry about it, just 'lie flat' and wait for it to be unfrozen; it won't significantly affect your life.

2. If the amount in the card is considerable, actively contact the relevant parties, calculate the refund amount based on the actual situation, and plan the optimal solution for unfreezing later to strive for the early restoration of normal card usage.

3. If it is a salary card and cannot be easily replaced, carefully assess the approximate duration of the freeze, the total amount involved in the case, and weigh it against your own financial capacity before deciding how to handle it.

Another key piece of information to know: if you are involved in an online gambling case, receiving a notice of card freeze is likely a prelude to the deduction of funds and is part of the legal process. At this point, don't focus solely on explaining the notice; most of the time, explanations won't help because it's just a necessary procedure. At this stage, even if you want a refund, the other party may not accept it.

I am Audi Brother. If you have any questions, feel free to ask me. You can also contact me regarding withdrawals; after bank review, payments will be disbursed from the payment institution's reserve fund, the safest funds in the country.