This is an uncredited video posted by an anonymous reddit nobody with no date, no time, and no links to where it came from. The audio could be entirely fabricated. It could be footage from 2 years ago. It could be entirely fake. I don't understand the language they're speaking in the video, and it's likely that none of the "translators" in the comments there do either.

It's a waste of time to speculate on the living conditions of people in Shanghai based on this information.