Theater.
Building is building: you have to have plans permits etc. This crisis started mere weeks ago: planning a hospital takes months if not years.
Either it was already in the works or they are just pushing dirt around for show.
It’s prefabs. Much like mobile homes and the like - if you’re the government, the prefabs obviate all but “where do we park these and how do we hook them up” plans and since it’s the Chinese government, they don’t have to get permits. You can set those up in short order in a public park or even a mall parking lot, etc.
Do you think they need plans, permits etc in china??? Better think again.