The Chinese real estate tycoon Xu Jiayin, also known as Hui Ka Yan in Hong Kong, is the second biggest billionaire "gainer" in 2017, with a net worth growth of $27.4 billion according to Forbes's latest list.
Forbes tracked the net worth growth of more than 2,000 billionaires between Jan 1 and Dec 14 this year. The top 10 billionaires added $204 billion to their fortunes in total.
Amazon CEO Jeff Bezos, currently the richest person in the world, topped the list, gaining $33.8 billion thanks to soaring Amazon stock.
Pony Ma, chairman of Tencent Holdings, took fifth place. Yang Huiyan of Country Garden Holdings, the richest woman in China, was ranked eighth.
