The highest level is the Domestic Dynamics Proof Attachment (《国内动态清样附页》), which is specifically provided for members of the CCP Politburo Standing Committee and relevant officials, usually reflecting highly significant and urgent situations.
[6] According to the media regulation in China, certain matters that media outlets believe would harm the image of the Chinese government, threaten social stability and unity, or other matters not suitable for open publication, such as certain events of corruption, social unrest, and large-scale business swindles, should be reported internally rather than publicly.
[2] They are often similar in form to investigative reporting, and are prepared by the journalists working for the official media such as Xinhua News Agency and the People’s Daily.
[1][2] Often, they focus on information already available in the Internet, but not in the Chinese traditional printed mainstream media, which is both censored by the government, and in which self-censorship of sensitive items is present.
[8] As Hu Xingdou, a professor of social science at the Beijing Institute of Technology, notes: "[...] there are some issues that even neican won't touch", for example, military affairs and high-level corruption.