Beijing State Security Bureau

The Beijing State Security Bureau (Chinese: 北京市国家安全局; pinyin: běijīng shì guójiā ānquán jú; Beijing SSB) is a municipal bureau of China's Ministry of State Security tasked with national security, intelligence and secret policing in the country's capital. Like other state security bureaus, the Beijing bureau is semi-autonomous from the national headquarters of the MSS located across the city while being simultaneously co-located within the Beijing Municipal Public Security Bureau.

Source: Wikipedia — Beijing State Security Bureau (CC BY-SA 4.0)