In the People's Republic of China, grid-style social management (Chinese: 社会网格化管理 ; pinyin: shèhuì wǎnggé huà guǎnlǐ ) is a surveillance system used to maintain public security and social order.
The China National Grid project (CNGrid) was first implemented as a trial in Dongcheng District, Beijing in 2004, and coincided with the abolition of the agricultural tax in 2004 which reduced the power of local governments in China. It was inspired by the grid management of Westminster, London.
The pilot project was launched in the Dongcheng District, where the district's 205 communities were subdivided into 589-part grid. 120,000 community watchers were enrolled.
In December 2005, the authorities launched the China Grid Computing Center was officially formed to lead and manage the CNGrid. Eventually, test watchers were equipped with mobile devices designed for reporting and communications. Authorities also started to apply a mutli-layer model in areas with denser populations.