I believe the videos were shot on the rooftop of the Hyatt on the Bund hotel. My hypothesis is that it could have been the shadow projected by a building due to ground lights, in particular the shadow of the building that is on the right side of the hotel they were on the rooftop of since in the second video the camera moves downwards right towards the TV Tower then upwards left towards the location of the building, the building which also happens to an office building–perhaps a bank ... Read even more
