Contestants compete during horse racing in Darhan Muminggan United Banner, north China's Inner Mongolia Autonomous Region, July 22, 2017. An annual Nadam fair of the banner opened here Saturday. The three-day fair will feature ethnic Mongolian traditional sports, such as archery, wrestling, horse racing, horse walking as well as traditional singing and dancing performances. Nadam, meaning "entertainment" or "recreation" in Mongolian, is a mass traditional Mongolian festival in which people celebrate harvests and pray for good luck. (Xinhua/Ren Junchuan)