Big data "kill cooked": refers to the sales strategy of charging a higher standard for customers who have multiple consumption records or higher spending power when the same goods or services are provided, based on the screening results of big data. The following are big data "kill". ['Xiao Li is in charge of the reception work of the unit, and often has to make an appointment for business car transfers. Later, as long as he hits a taxi, the online appointment platform will directly push the high-priced business car.', 'Lao Zhang, who often makes hotel reservations online, always kept the price at 380 yuan when booking a single room in a hotel. His nephew came to see him during the summer vacation and also booked the same room on the Internet, but the price was a quarter cheaper. One.', 'A supermarket located in the financial service area of the city center has a favorable environment and strong customer purchasing power. A branded beverage sells for as much as 15 yuan here, and this kind of beverage costs only 10 yuan in a convenience store in a residential area.', 'A shopping website launches a new user promotion activity. Every newly registered user can get a coupon for free. The new member is much cheaper than the old member, which makes the old members depressed.']