Bank cards belong to private accounts. According to national laws, generally only the court has the authority to freeze and inquire about private bank accounts after fulfilling the necessary procedures and formalities for handling cases.

article 218 of the civil procedure law of the people's Republic of China * * * if the person subjected to execution fails to perform the obligations specified in the legal documents according to the notice of execution, the people's court has the right to inquire about the deposit of the person subjected to execution from banks, credit cooperatives and other units with savings business.