If you purchase a single item with cash coupon / red packet, the cash coupon is not refundable when the goods are returned, and only 

your actual payment amount is refunded;

If you have more than one commodity in the order of cash coupon / red envelope, the amount of cash coupon will be allocated to each 

commodity in the proportion of commodity price. If the goods in the order are partly returned, the refund amount is the return 

commodity price minus the corresponding cash coupon deduction amount.

Cash coupon refund calculation rule

If you order the amount of total goods (goods and their prices and do not calculate subtotal, freight) for X yuan, the use of cash 

coupons for the amount of $Y

The discount rate is Y/X = D

The amount to be refunded for each commodity is its unit price P * (1-D)

In short, the amount of cash coupons you use will not be refunded to each commodity.

Illustrate

If you buy a price of 100 yuan of goods A, and the price of 50 yuan of goods B, using a 50 yuan cash coupon, the actual payment of 100 

yuan.

When you need to return the goods to A individually, the amount of refund is

100* (1-50/150) =100*0.67= 67 yuan

When you need to return the goods to B individually, the amount of refund is

50* (1-50/150) =50*0.67= 33 yuan

Note: the above rules are not applicable to all kinds of promotional activities. The return policy of promotional activities is based 

on the specific description of the activity page.