Founder of online security firm Qihoo 360, Zhou Hongyi, has become $13 billion richer by relocating his company to China. Qihoo 360 delisted from New York Stock Exchange in 2016 and merged with a Shanghai-listed shell company, which surged 550% since the plan was announced in November 2017. Hongyi is now China's 11th richest person with a $14.1-billion fortune.