According to statistics from the Ministry of Public Security, as of the end of 2023, the number of motor vehicles in the country reached 435 million, of which 20.41 million were new energy vehicles; 94 cities across the country had car ownership exceeding one million, including Chengdu, Beijing, Chongqing, Shanghai and Suzhou. More than 5 million vehicles.According to the "China Mobile Source Environmental Management Annual Report (2023)", automobiles are the main contributors to the total emiss