I flew on the road for a long time and finally arrived. Coincidentally, it happened to be the recent U-card incident, and I was quite worried that I might not be able to use it anymore. Then, I was taught another lesson by @ CryditCard's friends. This card is not a traditional VCC card, which can be understood as a virtual credit card with certain restrictions, while Crydit is a debit card that works with DBS Bank in Hong Kong and does not have any restrictions.