Just got an SMS as follows.
In order to thank you for your support for Hang Seng MMPOWER World Mastercard, the Bank has specially extended your current MMPOWER World Mastercard rewards to February 29, 2024. The new MMPOWER World Mastercard reward program will be effective for you from March 1, 2024. For relevant details, terms and conditions, please visit hangseng.com/mpower9. Do you want to borrow or not? It's better to borrow first when you get it! Hang Seng Bank Limited: 83 Des Voeux Road Central, Hong Kong [EnquiryEN/CancellationUN: 29986899]
Can't click on the link, but based on the above time to cancel the card, after just getting it.