(2) The essence of UnionPay online payment is the payment gateway, which seems to be a POS card swiping machine in the supermarket, that is, when someone is willing to buy funds from Tian Tian Fund Network, they can pay online through UnionPay;
(3) They are in a cooperative and independent relationship, and they are not mutually exclusive and do not interfere with each other in business;
(4) Popular explanation: A man named Tian Tian opened a supermarket to sell funds and installed a POS machine called UnionPay Online.