What is the meaning of a black license plate with the character 'Shi'?

[StStella]

Black license plates with the character 'Shi' indicate vehicles belonging to foreign embassies. Here are specific details about black license plates: 1. Black License Plates: These plates feature black backgrounds with white characters and white borders. They are issued to foreign enterprises (including those from Hong Kong, Macau, and Taiwan), foreign and international organizations stationed in China, vehicles purchased by foreigners for personal use in China, vehicles entering from Hong Kong, Macau, Taiwan, or other countries, as well as temporary plates for customs-seized vehicles or classified institutions. 2. Foreign Enterprises: Black plates with white characters denote vehicles owned by foreign enterprises. Black plates with red characters preceded by the character 'Shi' indicate embassy vehicles, while those with the character 'Jing' signify vehicles permitted to cross borders.