Social and group shopping
You can buy an item at full price OR at a discounted price. To get it at a discount price, you can join in the other people trying to buy the item and finish the purchase or make the payment and then invite a friend to also make the purchase.
After paying, you can invite friends by sharing on WeChat, QQ, QZone, QR code, image or with a voice note. The order isn't shipped to you till the required number of people buy it with you.