Fifteen years ago my friend Bo left China to pursue an MBA at a top business school in the United States. Like many talented Chinese at the time, Bo decided to stay on in America after graduation. He was thrilled to buy a two-storied house in the suburbs, drive a Toyota and get a green card.

Though he never said it, I could sense he thought I was nuts for moving back to China after an American education to seek riches. After all, in those years, less than 100 Chinese had a net worth of more than $6 million.