Step 1: Go through the usual shopping process
Step 2: When on the 'Pay' tab, select the PayPal option (see below)
Step 3: Select the 'Pay with Debit or Credit Card' option (see below)
Step 4: Change country to China to have the option to use UnionPay (see below)
Step 5: Continue through the usual process
Step 6: Wait until your item(s) arrive and enjoy!