https://blog.wongcw.com/2018/10/14/icard%ef%bc%9a%e6%8f%90%e4%be%9b%e8%99%9a%e6%8b%9fvisa-mastercard-%e8%99%9a%e6%8b%9f%e9%a2%84%e4%bb%98%e5%8d%a1/
iCard:提供虚拟Visa & MasterCard 虚拟预付卡