sentences:  At the 2012 London Olympics, he won the gold medal in men's individual foil after defeating Egypt's Alaaeldin Abouelkassem with a score of 15-13.Along with 2013 world champion Miles Chamley-Watson of the United States, Lei was named “athlete role model” for the Nanjing 2014 Youth Olympic Games.He was also chosen to bear the Chinese flag at the 2014 Asian Games and the 2016 Summer Olympics.