The researchers found that between 4,345 and 4,324 years ago, there was a period of extremely high precipitation. This coincides with the decline of Liangzhu.
“The massive monsoon rains probably led to such severe flooding of the Yangtze and its branches that even the sophisticated dams and canals could no longer withstand these masses of water, destroying Liangzhu City and forcing people to flee,” says Spötl.
The researchers determined that the humid conditions persisted for another 300 years after these proposed floods.
For the full article, please see: https://cosmosmagazine.com/history/civilisations/liangzhu-city-flooding-...