This goes on every year.
Some years worse than others.
They never do anything about it.
The government is not accountable and there is no free speech.
Build a major city with a subway system on the Yellow River’s flood plain with no dykes and yeah, this will happen, and frequently. The PLA should create their own Corps of Engineers and not bother so much about Taiwan. Most of Zhengzhou, with all of that swiftly moving water going through it, is now part of the Yellow River. And as bad as it is now, it’s probably going to get worse. There are apparently 3 dams upstream from Zhengzhou ready to go.