No, according to the regulations of UnionPay, the purchase order must be confirmed by the cardholder's signature, so the merchant must check the authenticity and consistency of the cardholder's signature and the signature on the back of the card. According to this purchase order, the acquirer asks the paying bank for payment. If the cardholder does not agree to pay, saying that there is no such consumption, the paying bank can refuse to pay. If the acquirer, that is, the merchant's bank, asks for payment, it must make a claim against the cardholder based on this purchase order. If it is verified that the purchase order is not signed by the cardholder or not, the merchant will not receive the payment, so the merchant must check the purchase order to give the goods to the cardholder, otherwise the payment will not be received.