Yes the real estate bubble is real. I’d walk by these huge tower buildings... just beautiful for a couple blocks with new ones being built all around them and realize I was walking by vacant buildings with squatters camped in window wells and in corners outside the building. These would be thirty - forty story buildings. This has been going on for a very long time.
But the Chinese government has more levers to pull than countries like Japan. They also have vast resources and a huge labor pool that would love to have a job that paid $1/ hour. The economic boom started in the East and has been moving to the west. First the boom is started by incredibly low wage s of unskilled labor. Once they start becoming skilled then the wages rise and the management is kindled... wages rise further and they produce high quality goods and a middle class. The use of low wages to start things off continues to move West.
Just a little note. The thing that always blew me away traveling in China was the scale. Let's say I was driving for two hours west to east. Either close up or at a mid distance I could always see six or more huge cranes on both sides of the highway building at least eight high rise apartment complex. Sometimes five or six groups at one time... continuously for hours. The scale boggles the mind.
If you are interested I have a few of my photos posted here:

