Social fission is a profit-driven business model. Promoting the spread and sales of products through social interaction between people is essentially motivating customers through profit-driven and thus forming fission. According to the above definition, the following are not social fission? ['After selecting a certain product, a Wechat customer shares it in their social circle. After the friend helps to bargain, the customer can buy it at a low price, and also promotes the product.', 'After purchasing a favorite product, a WeChat user often took pictures and posted them in the circle of friends. Slowly everyone knows that she likes to buy high-end luxury goods.', 'After a customer of an e-commerce platform successfully purchases a product, share the link, and everyone who clicks can get a random amount of coupons provided by the merchant.', 'Old customers of a coffee shop can get a set voucher after participating in the "Invite friends to drink coffee for free" event.']