This is the new, happy version of those events. When a person gets sick and tests positive. They are given the choice to enter quarantine or stay home. If they stay home they cannot ever leave. The door is sealed. They are fed through window. If door seal broke, checked daily, they are forceably taken to quarantine. They can stay at home for an undetermined length of time. See. Everyone us happy according to Chinese. Although I have read it only takes one sick person in building. Then entire building sealed at entrance.
Well, at least they aren’t then setting the building on fire. That has been done before....
But at least the quarantined get to learn some dance moves from doctors in PPE.