Chinese billionaire Jack Ma teaches first class at University of Tokyo as top exec at his tech empire insists he’s ‘alive’ and ‘happy’

Jack Ma gives photographers the thumbs up outside the New York Stock Exchange. (Credit: Andrew Burton/Getty Images)

Chinese billionaire Jack Ma taught his first university class in the Japanese capital last week, as he continues his retreat from the limelight after publicly criticizing Beijing’s regulators.

Despite being worth an estimated $34.5 billion, Ma announced in May that he would be taking up a visiting professor position at the University of Tokyo this summer.