Former China Central Television (CCTV) journalist Chai Jing independently produced a documentary concerning the increasingly severe air pollution in mainland China. This documentary has gone viral since its premiere and has attracted hundreds of million of Chinese to view it online. The documentary exposed the environmental impacts brought about by different Chinese companies and government's negligence on the issue. Due to the controversy it has generated since its launch, the video has now been censored by Chinese government online.  Personal comments from China National Petroleum Corporation (CNPC) policy & standards control engineer provided in Chinese