A hand-made kite with the appearance of a Peking Opera-style mask is pictured during a kite-flying competition for teenagers in Chongchuan district, Nantong, East China's Jiangsu province, on April 6. The event attracted six teams from local primary and middle schools that offer kite-flying lessons to students. [Photo/ntjoy.com]

A man holds a Banyao kite during the competition on April 6. A Banyao kite is a traditional whistling kite – a unique type of South Chinese kite and a part of Nantong culture. Kite-flying competitions usually test a kite's flying duration in a designated area and from a designated flying angle, but for Banyao kites, the craftsmanship and whistling sounds are also taken into consideration. [Photo/ntjoy.com]

A boy flies a kite during the competition on April 6. [Photo/ntjoy.com]