OKX Card Test 2: - US card BIN 533171, Blue Blood subscription AI - 0 currency conversion fees (Mastercard official exchange rate) - 4.5% cashback for VIP2 and above (assets $200k+, monthly cap $200) - Cashback credited instantly Basically, this is the best U card so far. The product design is well-thought-out and truly understands real needs, plus it aligns nicely with the VIP system. Wishing Chinese users can get on board soon.