If I recall, there were always stories of southern China getting flooded every few decades. Tens of millions would get wiped out and killed by the floods. So, t

If I recall, there were always stories of southern China getting flooded every few decades. Tens of millions would get wiped out and killed by the floods. So, this is a very tragic and cyclic event. Thus, they were determined to build the great Three Gorges Dam, to control the flooding. And even at the cost, where it would at least hold back the floods for a few decades, then this might be worth it, in order to prevent regular destabilization. The society could at least grow and prosper for a while. This could buy the society enough time to build other fortifications, or do something to mitigate a future disaster. These people here live in a flood plain. The water is washing down from the mountains, and the government didn’t build enough flood run off to handle the torrential downpour. In the future, they should probably build their newer buildings on top of a 10 foot high concrete base. Or build more flood run off channels. It’s easy to be a naysayer and cast your doubt about something. It’s much harder to actually do the research, and try to engineer something to hold back the forces of Mother Nature, for the greater benefit of their society.