It may be more comparable if you refer to your geography a few miles inland from the islands of Hong Kong to the city of Shenzhen and indeed the 20+ million peo

It may be more comparable if you refer to your geography a few miles inland from the islands of Hong Kong to the city of Shenzhen and indeed the 20+ million people living in the Pearl River Delta. This is the totality of the area that I referenced. It's a delta and port, flat all around, just like Houston. Further, I also own a home in Houston, so I'm in full command of the comparison. There are plenty of things that Houston can learn from this area about infrastructure and flood control.