🇨🇳 China · Earthwork
Jebel Barkal Pyramid North — Xi'an Plain (Xi'an)
Iron Age (1200 BCE–500 CE) · Medieval
Jebel Barkal Pyramid North in Xi'an Plain, China is a Iron Age (1200 BCE–500 CE) earthwork attributed to Medieval culture.
🇨🇳 China · Hydraulic works
Dujiangyan Irrigation System
Warring States, Qin to Qing continuous · Qin state engineers under Li Bing (later successive dynasties maintenance)
256 BCE Qin weir still irrigating 5,300 km²—world's oldest dam-less hydraulic system.