https://www.fortress.com.hk/zh-hk/promotion/hsbc-hk
total $450 RC, 收齊. 另外hsbc red master card,7月開始4%回贈上限改為400元，
即簽一萬網上簽賬即夠數。餘額為1% rebate
https://www.hsbc.com.hk/zh-hk/credit-cards/products/red/
https://www.hsbc.com.hk/content/dam/hsbc/hk/tc/docs/credit-cards/terms-and-conditions-for-red-credit-card-reward-scheme.pdf
