According to the intellectual property information on Tianyancha, on July 26th, BYD (002594) applied for a patent for 'Amphibious vehicles and their control methods,' which has been published. The patent abstract and description show that amphibious vehicles include a body and a propeller wheel, and the propeller wheel can be rotated relative to the body around a vertical axis parallel to the body, so that the turning angle of the propeller wheel can be adjusted. The application combines the steering of the propeller wheel with the propeller, making the propeller wheel adaptable for direction adjustment, and utilizes the reverse propulsion of the propeller to provide power to the vehicle. This application can improve the safety and controllability of water-crossing vehicles and can run in a straight line steadily in different flow directions and speeds of the water surface. In addition, this application does not superimpose the structure of the vehicle and the ship, eliminating the need to add a separate propeller and power mechanism, and allowing a single propeller wheel to travel on land and in water environments, filling the gap in the market and reducing costs.