Question: Chu Mu-yen is an athlete playing a sport characterized by what ?

Related documents: [0]  [DOC] Taekwondo ( , ; from Korean "taegwondo" ] ) is a Korean martial art, characterized by its emphasis on head-height kicks, jumping and spinning kicks, and fast kicking techniques. [END] 
[1]  [DOC] Chu Mu-yen ( born March 14, 1982) is a Taekwondo athlete from Taiwan. He is the second Taiwanese athlete and first male to win a gold medal at the Olympics, winning in men's under 58-kilogram class in Taekwondo at the Athens 2004 Games. He was 22 years old and 1.73 meters tall when he won the Gold in Athens, and frequently competed against larger, stronger players in his Olympic Fly division. In the 2008 Olympics, Chu won the bronze medal in the men's under 58-kilogram class in Taekwondo. [END]  
Answer: its emphasis on head-height kicks, jumping and spinning kicks, and fast kicking techniques
its emphasis on head-height kicks, jumping and spinning kicks, and fast kicking techniques