🇨🇳 China · Ancient city
Chengzishan
Neolithic Baodun (2700–2000 BCE; walled 2500 BCE) · Baodun culture (Sichuan Chengdu Plain, Sanxingdui precursor)
Chengzishan is a Baodun culture walled town (2700–2000 BCE) — earliest walled site on the Chengdu Plain (pre-Sanxingdui), 10-ha rectangular walled settlement with rammed-earth wall.