Rooftopper films own death as he falls from 60 storey building!!(video)
Wu Yongning, 26, climbed to the top of 62-storey skyscraper to film viral video
Footage shows him doing pull-ups before struggling to get back up on the ledge
Camera captured moment he let go and fell 45ft to his death on a terrace below
He was going to formally propose to his girlfriend days after video was taken