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Tagsqin
7 places carry this tag, across every kind and continent it appears in.
🇨🇳 China · Hydraulic works
Qin 256 BCE to Han 100 BCE to Qing 1884 (Dujiangyan east feeder) · Qin–Han Shu (Sichuan) state hydraulic
East feeder canal 5.2 km ×12×2.2 m stone revet 1.2 m with bottleneck sluice 8 m: Qin 256 BCE/Han 100 BCE eastern Chengdu 820 ha.
🇨🇳 China · Hydraulic works
Warring States Qin 246 BCE to Han 120 BCE (Zhengguo south) · Qin state Wei–Jing plain with Korean Zheng Guo engineer
South distributary 18 km ×14×2.6 m hangtu levees 3 m with 6 dragon-tail weirs 42 m and fish-scale carp gates 1.2 m: Zheng 246 BCE spy-branch.
🇨🇳 China · Hydraulic works
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.
🇨🇳 China · Hydraulic works
Qin to Tang to Qing continuous use · Qin imperial engineers under Shi Lu
214 BCE Qin contour canal—36 km linking Yangtze to Pearl via watershed split and 1,400-year-earlier pound locks.
🇨🇳 China · Hydraulic works
Warring States to Han continuous · Qin with Han engineer Zheng Guo (鄭國)
246 BCE 'sabotage' canal that irrigated 27,000 ha and enabled Qin to unify China.
🇨🇳 China · Hydraulic works
Qin 214 BCE to Tang 825 CE (Lingqu North pound) · Qin imperial (Shi Huang–Shi Lu) Lingqu Yue conquest hydraulic
North pound extension 1.2 km ×8×1.5 m with 3 Qin granite pound-locks 8×4 m ×1.0 m lift — earliest locks globally 214 BCE.
🇨🇳 China · Pyramid
Qin Dynasty · Qin / Han-precursor
Unopened earthen pyramid mound of Qin Shi Huang (259–210 BCE) with 600 pits, ~8000 terracotta warriors, chariots, weapons protecting subterranean bronze palace described by Sima Qian with mercury…
