China is still urbanizing rapidly. Just like GP said, it won't be a ghost city for long. It depends though on how long the investor can hold out, and whether or not the new city is doomed from the start.

CCP planning is just different. TBD if it's doomed to fail like the Soviet Union, or if it will make it through a crisis like this. It's also hard to tell what will ultimately call a crisis; just thinking back to 2008, a lot of the story is only figured out in retrospect (eg how critical Bear Stearns was).