On July 26, I went to the Dingzhou Huisheng BYD service store to repair the car (the car started fast, and the volume adjustment buttons inside the car could not be used). After I went there, the technician couldn't detect the problem with the computer, and said the car was OK, so I complained to the manufacturer, which angered their general manager, who smashed the car on the spot and beat the owner. Dingzhou Huisheng is bigger than the service store of Yadi [Detailed]