Bao Fan, star banker in China who vanished, is said to be aiding government inquiry

The disappearance of Bao Fan, a major player in the growth of China's tech sector, raised new concerns that Beijing could again be targeting Chinese companies and the executives who run them.BOBBY YIP/Reuters China Renaissance Holdings said Sunday that its CEO, Bao Fan, a prominent investment banker in China, was co-operating with a government investigation, weeks after the company had announced it was unable to contact him. In a filing with the Hong Kong Stock Exchange, the company said its board had "become aware that Mr. Bao is currently co-operating in an investigation being carried out by certain authorities in…