On October 11, 2006, the Sixth Plenary Session of the 16th Central Committee of the Communist Party adopted a Decision on Major Issues Concerning the Building of a Socialist Harmonious Society. From 2007, China’s new high-speed trains carried the name Harmony (和谐号).
Chinese internet users found another use for the word. 河蟹, river crab, sounds like 和谐, harmony. It came to stand for blocking and covering up negative news and for controlling speech. Users also call the Harmony trains the River Crab.