Who is to blame for Chinese rooftopper's dramatic death?

Who is to blame for Chinese rooftopper's dramatic death?
- A video circulating on Chinese social media shows a young man preforming chin ups while hanging from the side of a 62-story building in the city ... A 25-year-old Hong Kong rooftopping photographer, who asked not to be named, told CNN in the wake of Wu's death some of China's rooftoppers ...