It's a $10 gamble that's built a multi-billion dollar empire. From Beijing to Bangkok, London to New York City, PopMart has turned mystery into money. But in a world where consumers are pulling back and competition for attention [music] is fierce, can the surprise last.>> [music] >> I'm Melan Yu on assignment in Beijing where I sat down for an exclusive interview with PopMart COO SA who is leading global expansion from products to parts like this one. PopMart was founded in 2010, but its global tipping poin ...