They're all lower-class people; Sky City is full of lower-class inhabitants.
The buildings overhead are too tightly packed; Gu Mian can't catch a glimpse of the whole of Sky City through the pitifully narrow gap, but within his view, there isn't a single upper-class person in sight.
No pale faces with flamboyant expressions, everyone in the city is lower-class.
The city above should be the City of Pleasure mentioned by Manager Jin. Seeing it in person is even more spectacular than imagined. The city looks like a massive flying saucer; if Gu Mian didn't already know the situation here, he might have thought aliens were attacking Paradise World.
Lu Yi's Circus is also in the City of Pleasure, and upper-class people reside within this city as well. But in the visible range, it's all lower-class people. Could it be that when this city flipped upside down, there was a population filtration? Did they filter out all the upper-class people?
