https://www.redhotoffers.hsbc.com.hk/tc/latest-offers/reward-plus-qrcode-payment/feature/setting-credit-card-qrcode-payment/
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銀聯「雲閃付」二維碼：7-Eleven 簽賬滿$25 即減$10（2-31/1）
https://www.jetsoclub.com/2020/01/unionpay-app-7-eleven-offer-0101.html