Rau, Laoz (Zhuang: Bouxraeuz), Liao (Chinese: 僚人) or Lao peoples (Lao: ລາວລຸ່ມ), is an ethnic cluster covering Zhuang, Buyei, Tay–Nùng and other Northern Tai language-speaking peoples. These peoples are inclined to call themselves lao which means "person" or "venerable person".