Vietnamese martial artist became a world champion in 2013 . Duong trains seven days a week , seven in build up to competition . Sport of fighting derived from ancient Chinese martial art . He displays incredible skill in routine that uses sticks and swords .
Vietnamese martial artist became a world champion in 2013 . Duong trains six days a week , seven in build up to tournaments . Sport of Wushu derived from ancient Chinese martial art . Duong displays incredible athleticism in routine that uses spears and swords .