Chinese billionaire tech banker Bao Fan goes missing

Disappearance of China Renaissance chair raises fears of fresh crackdown on China's finance industry

A billionaire Chinese dealmaker has gone missing, plunging one of the country's top investment banks into turmoil.

Bao Fan, the founder and executive director of China Renaissance, is a major figure in the Chinese tech industry and has played an important role in the emergence of a string of large domestic internet startups.