Singapore, one of the most expensive cities in the world, is home to an estimated 44 billionaires. These ultra-wealthy individuals range from real estate magnates and private investors to hotpot billionaires – and even the co-founder of Facebook. Singapore's richest person is Zhang Yong , a 50-year-old restaurateur who's worth US$16.4 billion and chairs the popular Sichuan hotpot chain Haidilao, which has locations in China, the US, Japan, South Korea and Singapore, according to Forbes ' Real Time Billionaires list. His wife, Shu Ping, the director of the company, is also on Singapore’s billionaires list, with a net worth of US$3.3 billion. Hotpot billionaire Zhang Yong hits jackpot as Singapore’s richest person Here are Singapore's richest people, who are worth a combined US$95.7 billion. Zhao Tao Tao is the chairman of Shandong Buchang Pharmaceuticals. Net worth: US$2 billion Age: 55 Source of wealth: pharmaceuticals Sam Goi Goi owns Tee Yih Jia Food Manufacturing, the world's largest maker of popiah skins, which are used to make spring rolls. Net worth: US$2 billion Age: 72 Source of wealth: frozen foods Asok Kumar Hiranandani Hiranandani's property company, Royal Group, owns hotels such as the So Softel Hotel in Singapore. Net worth: US$2 billion Age: 66 Source of wealth: real estate Peter Lim Peter Lim is a private investor focused on property, health care, and sports. Net worth: US$2.1 billion Age: 67 Source of wealth: investments Singapore’s super-rich are low-key and humble, not ‘Crazy’ Kuok Khoon Hong Kuok co-founded Wilmar in 1991, which is now one of the world's largest palm oil producers. Net worth: US$2.9 billion Age: 71 Source of wealth: palm oil Richard Chandler The native New Zealander moved to Singapore in 2006, where he now runs Clermont Group, his personal investment fund. Net worth: US$2.9 billion Age: 61 Source of wealth: investments Kumar and RK Kumar and RK are Singapore's leading landlords, with properties including the five-star Hotel Intercontinental. Net worth: US$3.1 billion Age: 66 Source of wealth: real estate Choo Chong Ngen Hotel tycoon Choo Chong Ngen founded the Hotel 81 budget hotel chain in Singapore. Net worth: US$3.3 billion Age: 67 Source of wealth: hotels Blackpink to Eric Tse – the Asian creatives who will lead the 2020s Shu Ping Ping, the wife of Singapore's richest man, Zhang Yong, is director and one of the founders of hotpot chain Haidilao. Net worth: US$3.3 billion Age: unknown Source of wealth: restaurants Jason Chang The corporate headquarters of ASE Group, the company Chang chairs, in Kaohsiung, Taiwan. Net worth: US$3.4 billion Age: 76 Source of wealth: electronics Kwek Leng Beng Kwek is the chairman of Singapore's Hong Leong Group and executive chairman of City Developments, one of the island's largest property developers. Net worth: US$3.7 billion Age: 80 Source of wealth: real estate Kwee brothers The four Kwee brothers own Pontiac Land, which owns luxury hotels and office towers across Singapore. Net worth: US$6.5 billion Age: unknown Source of wealth: real estate 10 billionaire tycoons helping to propel Asia’s growing success Wee Cho Yaw Wee Cho Yaw is the chairman emeritus of United Overseas Bank, Singapore's third-largest lender, which was co-founded by his father. Net worth: US$7.1 billion Age: 91 Source of wealth: banking Goh Cheng Liang Goh holds a 39 per cent stake in Nippon Paint Holdings, the world's fourth-largest paint manufacturer. Net worth: US$10.5 billion Age: 93 Source of wealth: paints Robert and Philip Ng The Ng brothers control Far East Organization, Singapore's largest private landlord and developer. Net worth: US$12.2 billion Age: unknown Source of wealth: real estate Eduardo Saverin Saverin co-founded Facebook with Harvard classmate Mark Zuckerberg in 2004. Net worth: US$12.3 billion Age: 38 Source of wealth: Facebook 11 New Year’s resolutions Mark Zuckerberg has made this past decade Zhang Yong Yong is the founder of hotpot chain Haidilao. Net worth: US$16.4 billion Age: 50 Source of wealth: restaurants Want more stories like this? Sign up here . Follow STYLE on Facebook , Instagram , YouTube and Twitter . This story was originally published in Business Insider.