Turpan's underground canal miracle — delivering Tianshan snowmelt to oases with zero evaporation loss, ranked alongside the Great Wall and Grand Canal as one of ancient China's three greatest engineering feats.
Karez
AE61Turpan's underground canal miracle — delivering Tianshan snowmelt to oases with zero evaporation loss, ranked alongside the Great Wall and Grand Canal as one of ancient China's three greatest engineering feats.