Tech millionaires keep the country's wealth machine humming for banks

Wang Feng is the kind of successful tech entrepreneur whom private wealth bankers from Goldman Sachs to Credit Suisse would love to land as a client. He's chairman of Beijing-based Linekong Interactive Group, a Chinese mobile and online game developer valued at about $194 million - and Wang, 46, owns a 20 percent stake.

What's more, five years ago, Wang co-founded Geek Founders Capital, which has since raised 300 million yuan ($46 million) in three financing rounds and invested in more than 60 companies. Last year he and a partner, Zhang Xiaowei, a former Huawei Technologies executive, raised $60 million from venture capitalists to launch a home-console game company to take on the likes of Microsoft's Xbox and Sony's PlayStation in China.