A couple shows their official marriage certificates stamped with 08-08-08 after a wedding ceremony in Beijing August 8, 2008. At least 16,400 couples in Beijing, and thousands more nation-wide, chose the auspicious combination of the eighth day of the eighth month, 2008 to get married. Eight is a lucky number in Chinese, and on Friday the Olympic Games will open in Beijing, at 8 pm (1200 GMT). [Agencies]