622 188 is the BIN of China Postal Savings Bank's green card UnionPay standard card, which belongs to debit card.

I hope those friends who don't understand or have a little knowledge don't talk nonsense. UnionPay cards are also divided into UnionPay standard cards and UnionPay identification cards. Card head is UnionPay standard card, and those cards with "UnionPay" logo at the beginning are UnionPay logo cards.

Credit cards in a broad sense include: debit cards, credit cards and quasi-credit cards; Credit cards in a narrow sense include: credit cards and quasi-credit cards. For example, China Merchants Bank UnionPay standard credit card (debit card) ordinary card beginning with 622575, China Merchants Bank UnionPay standard credit card (debit card) gold card beginning with 622576, and ICBC credit card BIN, 62210 beginning with 62230 62235 62240 62245.

And the friend who said, "It's the beginning of 6", I wonder if you have seen the cards starting with 3, 4, 5 and 9. In Chinese mainland, cards with UnionPay on the front of 9 are UnionPay logo cards, 3-character cards are generally AE, JCB and DCI, 4-character cards are generally VISA, 5-character cards are MASTERCARD, 6-character cards are not necessarily UnionPay standard cards, and UnionPay standard cards are 60. This is the BIN of the early Pacific debit card of Bank of Communications, which was independently applied by Bank of Communications to the international ISO organization.