A herdman performs collecting hada, a piece of silk used as greeting gift, on horse during a winter Nadam fair in Xilinhot, north China's Inner Mongolia Autonomous Region, Jan. 16, 2018. The event kicked off here on Tuesday. Nadam Fair, meaning "entertainment" or "recreation" in Mongolian, is a mass traditional Mongolian festival mainly filled with sports events.(Xinhua/Lian Zhen)