Bank of China
Advantages: there is a personal photo on the back of the credit card, which reduces the risk of being fraudulently used; 1985, the earliest credit card issuing bank in China.
Disadvantages: account cancellation has to go to business outlets; Low quota (common fault of state-owned banks); 800 only for Great Wall International Card; Alipay is not supported;
Conclusion: Olympic cards are suitable for collection.