🇨🇳 China · Ancient city
Chengtoushan
Daxi (5500–3300) → Qujialing → Shijiahe 5500–2300 BCE · Daxi → Qujialing → Shijiahe (Middle Yangzi walled cities)
Earliest walled rice city in China (c.5500–3000 BCE) at Chengtoushan plateau on the Liyang Plain near Li County — 8 ha fortified town with 3 m rammed-earth wall 800 m diameter and outer moat,…