Who needs sleep? What a waste of time! This mantra has become the norm at China's fastest growing startups who are competing fiercely on cost and speed.
One reason for this, he says, is that for many tech start-ups in China, their business models are not based on a unique idea, but one derived from somewhere else, either another start-up in China or one in the US. This leaves them only two ways to compete—on cost and speed. “And when you’re competing on low cost and speed, there’s really only one culture to be successful, and that’s a 24-7, 365 (day) culture.”
http://www.bbc.com/capital/story/20160825-inside-the-high-pressure-world-of-chinas-overtime-dogs