https://goo.gl/maps/8Z9Z28d6npSv4erKA
Here is a link to the Wuchang Shipyard, located in Wuhan China. Makes subs, warships, yachts and lots of off shore oilfield equipment. The Yuan and Song class submarines are built here.
The Yangtze River is larger than the Mississippi River (at least in terms of flow), so you can imagine what a massive flood can do to civilization along its’ riverbanks.
I suspect that Shanghai is safe, if only that the PRC can flood hundreds of miles of farmland to save PRC investments within the city.
Much like any flood disaster anywhere, the reality won't be know for a long time after it subsides.
After all, what if the floods so damage infrastructure that next years’ crops can't be planted, or properly harvested?
It would be a disaster for the stock market too. Think of all the consumer products that are made in China now. Iphones, Nikes, every power tool, chemicals, clothing, batteries, etc.
It would be a global financial disaster that would make the Wuhan Flu look like a cake walk. Hardly any global corporations would be spared from financial damage.
Think of all the containers that would be washed out to sea if the dam collapsed and flooded everything down to Shanghai.
That old adage;
“People are Starving
in China.”