For example, when we pay online on Amazon, JD.COM and other websites, if we click "online banking" or "credit card payment", there will be no foreign bank card options, so we can only pay with several domestic bank cards recognized by this website. You face the same problem. What should I do to get a Japanese bank card? You open an account in the China office (branch) of the Bank of Japan. Search Baidu Library "Directory of Major Foreign Banks in China".
I noticed that when JD.com chose UnionPay Online, there were four foreign banks to choose from: Citigroup, East Asia, Standard Chartered and Societe Generale. So the key depends on the setting of the website and whether there are foreign bank options in its various payment methods.