https://www.celebritynetworth.com/richest-businessmen/richest-billionaires/chang-yun-chung-net-worth/
Chang Yun Chung Net Worth | Celebrity Net Worth
Dec 1, 2018 - Chang Yun Chung net worth: Chang Yun Chung is a Singapore businessman and entrepreneur who has a net worth of $2.5 billion. Chang Yun
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https://www.celebritynetworth.com/articles/billionaire-news/meet-100-year-old-chang-yun-chung-the-worlds-oldest-billionaire/
Meet 100-Year-Old Chang Yun Chung, The World's Oldest Billionaire | Celebrity Net Worth
Dec 9, 2018 - Chang was still active in the shipping business until "only recently," finally slowing down as head of his Pacific International Lines after nearly 70 years in...