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 新疆

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.