It's a foreign-related vehicle, a foreign car and a diplomatic agency car.

Black license plates refer to vehicles driving in China, vehicles purchased by foreign companies, institutions of foreign and international organizations in China, vehicles imported from Hong Kong, Macao and Taiwan by foreigners in private names, and vehicles temporarily licensed by the customs or vehicles of secret agencies. White characters on a black background are the cars of foreign-funded enterprises, and the embassy cars are in front of the red characters on a black background, indicating that the cars can cross the border.