Watch these 3 guys scale the Shun Hing Tower in Shenzhen

What the hell, man? I have sweaty palms just watching this video. Isn't the fear of dying a healthy thing to have? These 3 people seem to not have it at all as they scale the Shun Hing Tower in Shenzhen without any safety harnesses whatsoever. Every time I watch one of these videos of people rooftopping I imagine the horrible consequences that would result if they dropped even just one small object by accident (memory card, coin, etc.). Eeks!