The sweet potato, sweet potato, sweet potato, and white potato you are referring to are all nicknames for sweet potato. In the northern region, it is also called red potato. Potatoes: Potatoes are called Didan in the Lunan area of ??Shandong Province (Tengzhou), taro or Yangshan taro in Yunnan and Guizhou, Fangui sweet potatoes in Guangxi, yam eggs in Shanxi, and potatoes are often called potatoes in the Northeastern provinces. Potatoes are also known as potato, potato, potato, yam egg, steamed bun egg, potato (a common name for people in Hong Kong and Guangzhou), etc.