Chery 4s shop contract is not stamped and signed, but there is a payment invoice. Saying that you don't want to book a car for 8 hours needs to be re-signed, which has no legal effect. When buying a car in a 4s shop, after discussing the brand, model and price, it should be accurately recorded in black and white in the form of a car purchase contract, signed by the sales manager and stamped with the official seal of the 4s shop. Explain that the sales manager performs the duties of selling cars on behalf of the company, which is a job behavior, not a personal name to sell cars. In case of any dispute, the company shall bear the responsibility.