Does Erenhot or Hengshui have more inhabitants?
Erenhot:  There are 74,197 inhabitants (2010 census) and the elevation is 966 m . Hengshui:  At the 2010 census its population was 4,340,373 inhabitants whom 522,147 lived in the built-up ("or metro") area made of Taocheng urban district.
i don't know