A person can only apply for 4 Zhang Jianshe bank savings cards at most. The same agent in the same city bank card, in principle, no more than three. To handle debit cards, the agent who needs it can handle the card on the counter with his valid ID card, and then use it after it is valid. The same customer can only open 1 tier-1 account in the same bank (the number of tier-1 accounts is not limited), and the number of tier-2 and tier-3 accounts shall not exceed 5 in principle.