Want China Times – After years of smooth sailing, casino-related stocks on the Hong Kong market have finally seen their wild party coming to an end, with the eight major casino stocks seeing their market value nosedive by HK$191.5 billion (US$24.7 billion) this year as of May 12, reports Guangzhou’s 21st Century Business Herald. What triggered the crash was concerted action between China’s central government and the Macao government in cracking down on underground gambling of Chinese mainlanders at Macao casinos. High rollers from mainland China account for two thirds of the region’s gambling income, and Macau has become a…