It is not necessarily serious that the Criminal Investigation Brigade freezes bank cards. Normally, in economic crime cases, in order to facilitate the smooth progress of the criminal investigation, the investigating agency will freeze the suspect's bank account to prevent the victim's property from being lost. Of course, there are also cases where the property involved in the case flows from the criminal suspect's account into the accounts of other unrelated persons, resulting in normal transactions with the criminal suspect and the accounts of unrelated persons being frozen. Therefore, the freezing of a bank account is not necessarily serious, because it is not necessarily the case that one is suspected of committing a crime and is being investigated, it may also be caused by someone else being suspected of committing a crime. In such a situation, one must promptly learn about the situation from the relevant authorities that have frozen the account. And apply to the relevant authorities to lift the freeze in a timely manner according to the situation.

"Criminal Procedure Law of the People's Republic of China"

Article 144

The People's Procuratorate and the public security organs shall, according to the needs of investigating crimes, , can inquire and freeze criminal suspects’ deposits, remittances, bonds, stocks, fund shares and other properties in accordance with regulations. Relevant units and individuals should cooperate. If the criminal suspect's deposits, remittances, bonds, stocks, fund shares and other properties have been frozen, they shall not be frozen again. Article 145

The property, documents, emails, telegrams, or frozen deposits, remittances, bonds, stocks, fund shares, and other property that have been seized or detained shall be found to be indeed related to If it is irrelevant to the case, the seal, seizure, freezing and return shall be lifted within three days.