Founder of Pinduoduo, Colin Huang, has overtaken the billionaire in China
He is now second to Zhong Shanshan, head of bottled water giant Nongfu Spring
Chinese tech billionaire Jack Ma has vanished from his own reality TV show
It comes as Alibaba Group is at the centre of an anti-monopoly investigation
Market regulator said it was looking into Alibaba s policy of choose one of two