A contestant in a competition for motorized paragliders at Tianmen Mountain in Zhangjiajie, Central China's Hunan Province on June 30, 2019. (Photo: China News Service)

A contestant in a competition for motorized paragliders at Tianmen Mountain in Zhangjiajie, Central China's Hunan Province on June 30, 2019. (Photo: China News Service)

A contestant in a competition for motorized paragliders at Tianmen Mountain in Zhangjiajie, Central China's Hunan Province on June 30, 2019. (Photo: China News Service)

A contestant in a competition for motorized paragliders at Tianmen Mountain in Zhangjiajie, Central China's Hunan Province on June 30, 2019. (Photo: China News Service)

A contestant in a competition for motorized paragliders at Tianmen Mountain in Zhangjiajie, Central China's Hunan Province on June 30, 2019. (Photo: China News Service)