Hong Kong: Alibaba Group founder Jack Ma, who has been out of public since a regulatory clampdown on his business empire began late last year, is currently in Hong Kong and has met with business associates in recent days, two sources told Reuters. told. The Chinese billionaire has been keeping a low profile since delivering a speech in Shanghai last October criticizing China’s financial regulators. This triggered a chain of events that resulted in the shelving of their Ant Group’s mega IPO. While Ma made a limited number of public appearances in mainland China after that as speculation about his…