Zou looked glum as he waited for his score to be announced and afterwards said he felt he was well off the magificent standard he set at the 2012 Olympics .
Zou is china 's most decorated Olympian .
Zou , China 's most decorated Olympian , looked glum as he waited for his score to be announced and afterwards said he felt he was well off the magificent standard he set at the 2012 Olympics .