Changsha bank card is useless for two years, depending on whether this bank card is a credit card or a debit card. Credit cards generally have an expiration date. You can check whether the expiration date has passed, usually on the front of the bank card. You can eat it if it hasn't expired. Debit cards can always be used if there is a balance in the card. If there is no balance, the bank debit card with zero yuan or arrears for a long time will be automatically cancelled. Generally, this period is three years.