Euphemisms for Internet censorship in China

River crab (Chinese: 河蟹; pinyin: héxiè) and harmonious/harmonize/harmonization (Chinese: 和谐; pinyin: héxié) are Internet slang terms created by Chinese netizens in reference to the Internet censorship, or other kinds of censorship in mainland China. In Mandarin Chinese, the word "river crab" (河蟹), which originally meant Chinese mitten crab, sounds similar to "harmonious/harmonize/harmonization" (Chinese: 和谐).

Source: Wikipedia — Euphemisms for Internet censorship in China (CC BY-SA 4.0)