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2 places to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.
🇨🇳 China · Hydraulic works
Han to Qing (2nd c. BCE – 19th c. CE) · Han Chinese, Turkic Uyghur, Gaochang Tokharian, Hui
Tianshan 5,000-km 1784-karez gravity snow-melt system below sea level Han–present.
🇨🇳 China · Rock art
Bronze Age to Eastern Han (Warring States 400 BCE – Han) · Luoyue (proto-Zhuang Baiyue)
Guangxi karst cliffs 38 panels 1900 frog-shaman figures 5th c. BCE–2nd c. CE, UNESCO 1508.