The thing is that building in China is way cheaper than in the US, so for them it makes sense to just keep demolishing stuff and build new stuff. I saw it happe

The thing is that building in China is way cheaper than in the US, so for them it makes sense to just keep demolishing stuff and build new stuff. I saw it happening several times all over China. In Shanghai for instance, they are building a new Maglev station next to the old one, so there is no upgrading old stuff there.