In the heart of Dujiangyan City, southwest China's Sichuan Province, lies Yuzui – a marvel of ancient engineering that continues to shape the region's landscape and livelihoods. Known as the "fish mouth" for its distinctive shape, this 500-meter structure divides the Minjiang River into inner and outer channels, a feat of hydrological ingenuity dating back over two millennia.
As of 2026, Yuzui remains fully operational, blending its original cobblestone foundations with modern reinforcements of concrete and steel. Its enduring functionality safeguards the Chengdu Plain from seasonal floods while irrigating over 6,700 square kilometers of farmland – sustaining one of China's most vital agricultural regions.
Recent preservation efforts highlight its dual role as both working infrastructure and cultural heritage site. For travelers exploring Sichuan's engineering wonders and researchers studying sustainable water management, Yuzui offers unique insights into China's historical harmony with nature.
