China's richest man is a bottled water tycoon - with a "side interest" in a coronavirus vaccine, the BBC reports.

Zhong Shanshan founded Nongfu Spring bottled water in 1996, but he also has a controlling stake in Beijing Wantai Biological Pharmacy Enterprise, which boosted his wealth by as much as $20 billion by August of this year. Beijing Wantai has partnered with two universities in developing a vaccine for Covid-19.

The Bloomberg Billionaires Index estimates Zhong's wealth at $58.7 billion.