@StudioLooong It's sort of a tricky scene to figure out vanishing points and things like that. Its a somewhat stylized approach, so realism rules don't fit perfectly here. But there are some clues on how to solve it within the image. If you look at the floor plane, it's perfectly horizontal to the viewer. That means that you would use a 1 point perspective for the room itself. Since the shelves are also part of that box, it would also fall within the 1 point perspective. Anything within the room that is rotated would turn into a 2 point perspective like you have drawn on the box. Hope that makes sense. : )
That said, I like the finish that she chose better than using the vanishing points. Nice work @xin-li!