Lei Sheng is set to compete in his third Olympics, so here's a look at the some of the top moments in the fencer's career.

The 32-year-old won China's first gold medal in men's fencing at the 2012 London Games, but then decided to retire to go back to school and pursue an MBA at Peking University.

Two years ago Lei decided to return to the sport he loves so much and competed at the 2014 Incheon Asian Games. And now he will become the first defending champion to ever carry the flag for China at the Olympics.