sentences:  Beijing - 2008
  
  London - 2012
  
  2003
  
  2005
  
  2007
  
  2011
  
  2006
  
  2010
  
  After winning gold at the 2012 Summer Olympics, Zou decided to turn professional.On 23 January 2013, he signed a contract with boxing promotion company Top Rank and was subsequently trained by Freddie Roach.Zou debuted on 6 April 2013, beating Eleazar Valenzuela by unanimous decision.