Yusheng, yee sang or yuu sahng , or Prosperity Toss, also known as lo hei (Cantonese for 撈起 or 捞起) is a Teochew-style raw fish salad. It usually consists of strips of raw fish (sometimes salmon), mixed with shredded vegetables and a variety of sauces and condiments, among other ingredients. Yusheng literally means "raw fish" but since "fish (鱼)" is commonly conflated with its homophone "abundance (余)", Yúshēng (鱼生) is interpreted as a homophone for Yúshēng (余升) meaning an increase in abundance. Therefore, yusheng is considered a symbol of abundance, prosperity and vigor.
While versions of it are thought to have existed in China, the contemporary version was created and popularised in the 1960s amongst the ethnic Chinese community and its consumption has been associated with Chinese New Year festivities in Malaysia, Indonesia and Singapore.