Dogs perform during an international circus carnival at the Xinjiang Grand Theater in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, May 30, 2017. Circus performers from 11 countries including China, Colombia, Cuba, Kazakhstan and Russia would present 100 shows at the carnival due to last for three months. (Xinhua/Wang Fei)

Performers show acrobatics during an international circus carnival at the Xinjiang Grand Theater in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, May 30, 2017. Circus performers from 11 countries including China, Colombia, Cuba, Kazakhstan and Russia would present 100 shows at the carnival due to last for three months. (Xinhua/Wang Fei)

Performers dance during an international circus carnival at the Xinjiang Grand Theater in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, May 30, 2017. Circus performers from 11 countries including China, Colombia, Cuba, Kazakhstan and Russia would present 100 shows at the carnival due to last for three months. (Xinhua/Wang Fei)