Actors of Tibetan ethnic group perform a dance during the 11th Gesar horse racing festival in Maqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2017. A total of 643 competitors will compete in the five-day event. [Photo/Xinhua] 

Actors of Tibetan ethnic group perform a song during the 11th Gesar horse racing festival in Maqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2017. A total of 643 competitors will compete in the five-day event. [Photo/Xinhua]  

Actors of Tibetan ethnic group perform a dance during the 11th Gesar horse racing festival in Maqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2017. A total of 643 competitors will compete in the five-day event. [Photo/Xinhua]  

Actors of Tibetan ethnic group perform a dance during the 11th Gesar horse racing festival in Maqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2017. A total of 643 competitors will compete in the five-day event. [Photo/Xinhua]  

Riders perform horsemanship during the 11th Gesar horse racing festival in Maqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2017. A total of 643 competitors will compete in the five-day event. [Photo/Xinhua] 

Actors of Tibetan ethnic group perform a dance during the 11th Gesar horse racing festival in Maqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2017. A total of 643 competitors will compete in the five-day event. [Photo/Xinhua]