Kostas Moukas (back), a disabled Wushu teacher, teaches in his wheelchair, in Athens, Greece, June 5, 2018. Kostas Moukas started practicing Wushu since 2003 and is the only Wushu teacher in a wheelchair in Greece. He trains mixed classes that include seven disabled athletes who compete officially in the national championships. (Xinhua/Panagiotis Moschandreou)

Kostas Moukas (front), a disabled Wushu teacher, teaches in his wheelchair, in Athens, Greece, June 5, 2018. Kostas Moukas started practicing Wushu since 2003 and is the only Wushu teacher in a wheelchair in Greece. He trains mixed classes that include seven disabled athletes who compete officially in the national championships. (Xinhua/Panagiotis Moschandreou)

Kostas Moukas (front), a disabled Wushu teacher, teaches in his wheelchair, in Athens, Greece, June 5, 2018. Kostas Moukas started practicing Wushu since 2003 and is the only Wushu teacher in a wheelchair in Greece. He trains mixed classes that include seven disabled athletes who compete officially in the national championships. (Xinhua/Panagiotis Moschandreou)

Kostas Moukas (front), a disabled Wushu teacher, teaches in his wheelchair, in Athens, Greece, June 5, 2018. Kostas Moukas started practicing Wushu since 2003 and is the only Wushu teacher in a wheelchair in Greece. He trains mixed classes that include seven disabled athletes who compete officially in the national championships. (Xinhua/Panagiotis Moschandreou)