Is the landlord using a UnionPay chip card? I also have a UnionPay chip card, which is a fast payment service provided by China UnionPay, that is, "small secret exemption and visa exemption". This credit card has the function of "flash payment", and "small amount of confidentiality and visa exemption" is not a business launched by CCB. Even if it is not a credit card of CCB, it is the same as ABC, Bank of Communications and China Merchants Bank as long as it has the function of flash payment. With the Longka credit card with the logo of "Flash Payment", when a designated merchant conducts a transaction with a certain amount (RMB in 3 yuan, subject to the local limit overseas) or less, it is only necessary to put the card or mobile device near the "Flash Payment" induction area of the terminal to complete the payment. In the payment process, there is no need to enter a password or sign. However, there is a limit to this payment method. The cumulative transaction limit of a single card for the small-amount confidential exemption and visa-free service of UnionPay chip card of Longka Credit Card is: RMB (inclusive) or less in 1 yuan, and the local limit shall prevail overseas. The landlord can also check the list of small confidential and visa-free merchants through the UnionPay website.