Ruth MOSTERN
Aerial view of the Dujiangyan Irrigation System. PHOTO BY RUTH MOSTERN.
Dujiangyan (The Weir on the Capital River) is a 2,300-year-old hydrological engineering works situated in the middle reaches of the Min River, the largest and longest of the Yangzi (Chang) headwaters. It is the oldest surviving water management system in the world, initially built by the Qin kingdom as a strategic element in defeating its rivals to the north and
