People wearing hats are seen during a horse racing festival in Nagqu City, southwest China's Tibet Autonomous Region, Aug. 10, 2019. People in Amdo County of Nagqu City have a tradition of wearing hats, which are now mostly made from lamb skins and artificial leather.The hat usually has an antenna-like stripe of fabric at the top. (Xinhua/Chogo)

People wearing hats are seen during a horse racing festival in Nagqu City, southwest China's Tibet Autonomous Region, Aug. 10, 2019. People in Amdo County of Nagqu City have a tradition of wearing hats, which are now mostly made from lamb skins and artificial leather.The hat usually has an antenna-like stripe of fabric at the top. (Xinhua/Chogo)

People wearing hats are seen during a horse racing festival in Nagqu City, southwest China's Tibet Autonomous Region, Aug. 10, 2019. People in Amdo County of Nagqu City have a tradition of wearing hats, which are now mostly made from lamb skins and artificial leather.The hat usually has an antenna-like stripe of fabric at the top. (Xinhua/Chogo)

A woman wearing a hat is seen during a horse racing festival in Nagqu City, southwest China's Tibet Autonomous Region, Aug. 10, 2019. People in Amdo County of Nagqu City have a tradition of wearing hats, which are now mostly made from lamb skins and artificial leather.The hat usually has an antenna-like stripe of fabric at the top. (Xinhua/Chogo)

A woman wearing a hat is seen during a horse racing festival in Nagqu City, southwest China's Tibet Autonomous Region, Aug. 10, 2019. People in Amdo County of Nagqu City have a tradition of wearing hats, which are now mostly made from lamb skins and artificial leather.The hat usually has an antenna-like stripe of fabric at the top. (Xinhua/Chogo)

A hat for men is seen during a horse racing festival in Nagqu City, southwest China's Tibet Autonomous Region, Aug. 10, 2019. People in Amdo County of Nagqu City have a tradition of wearing hats, which are now mostly made from lamb skins and artificial leather.The hat usually has an antenna-like stripe of fabric at the top. (Xinhua/Chogo)

People wearing hats are seen during a horse racing festival in Nagqu City, southwest China's Tibet Autonomous Region, Aug. 10, 2019. People in Amdo County of Nagqu City have a tradition of wearing hats, which are now mostly made from lamb skins and artificial leather.The hat usually has an antenna-like stripe of fabric at the top. (Xinhua/Chogo)