Hong Kong businessman Vincent Lo learned the hard way just how costly getting on Donald Trump's bad side can be. What started out in 1994 as a successful business relationship between Lo and Trump culminated in 2005 in a $1 billion lawsuit, after Trump decided he was displeased with how a deal went down. Lo, along with other Hong Kong businessmen who bailed Trump out of major financial trouble by investing in one of Trump's midtown Manhattan properties, eventually sold the 77-acre property near Lincoln Center for $1.76 billion, which The New York Times reports is "believed to be the largest residential real estate transaction in the city's history." But instead of being thrilled by the deal, Trump was livid.