beijing young chinese climb enthusiast fatal fall skyscraper make selfie video 15,000 rooftopping dare spur warn state media peril livestreaming wu yongning plunge death 62-storey build central china nov. day stop post videos skyscraper exploit weibo china equivalent twitter month late girlfriend confirm death 26-year old weibo post wu 60,000 followers weibo account look win prize 100,000 yuan 15,110 film stunt atop huayuan hua center changsha capital hunan province media say weekend death reminder need strong supervision livestreaming apps official china daily say tuesday try hype things obscene dangerous things purpose attract eyeball make profit say commentary tens thousands chinese post videos bid stardom livestreaming scene whose popularity grow rapidly particularly e-commerce social network game sectors wu use post videos scale tall build safety equipment hop use prize pay mother medical bill changsha even news say unclear livestreaming platform wu intend post bottom line livestreaming platforms supervision leave loopholes run comment online edition people daily wu videos weibo microblog attract several million view china warn livestreaming 'rooftopper fall death