Digging and diving deeper to reveal hydraulic projects and warships

Liangzhu hydraulic project site, Hangzhou, Zhejiang province

Researchers attribute the disappearance of the Neolithic Liangzhu culture, which dates back about 5,000 years in the Yangtze River delta, to environmental changes such as floods.

The discovery of a hydraulic project at a site in Yuhang district, on the northern outskirts of Hangzhou, shows that people at the time were adept at building city-states and protecting them from rising waters.