Hui Xian Reit Chairman and Non-Executive Director Kam Hing Lam toasts as he attends the first day of trading of Hong Kong's first yuan-denominated IPO at the Hong Kong Stock Exchange April 29, 2011. Billionaire Li Ka-shing's Hui Xian real estate investment trust tumbled as much as 7.8 percent on Friday, after Hong Kong's first yuan-denominated IPO priced its offer at the low end of expectations. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS)