Like other activists and intellectuals , Ai was prevented from leaving China in late 2010 . Ai suggested that the authorities wanted to prevent him from attending the ceremony in December 2010 to award the 2010 Nobel Peace Prize to fellow dissident Liu Xiaobo . Ai said that he had not been invited to the ceremony , and was attempting to travel to South Korea for a meeting when he was told that he could not leave for reasons of national security
2010 Nobel Peace Prize
2010 Nobel Peace Prize
Ai Weiwei