Fathers and sons prepare to compete in a Mongolian wrestling competition in Darhan Muminggan Joint Banner, Inner Mongolia autonomous region on July 22. [Photo/nmgnews.com.cn]

Dancers perform a traditional Mongolian routine during the opening ceremony of the 28th Nadam Fair held in Darhan Muminggan Joint Banner, Inner Mongolia autonomous region on July 22. [Photo/nmgnews.com.cn]