 For example, in the early 1850s when Chinese shops opened on Sacramento St in San Francisco, the Chinese emigrants, mainly from the Pearl River Delta west of Canton, called it "Tang people street" (唐人街); and the settlement became known as "Tang people town" (唐人埠) or Chinatown, which in Cantonese is "Tong Yun Fow".The term () is added to the various terms for the overseas Chinese to indicate those who would be considered ethnic minorities in China.The terms and () are all in usage.