Dancer Ma Xiaodong (1st L) and Cao Shuci (2nd L) perform during a rehearsal of ballet The Light of Heart in Beijing, capital of China, July 3, 2017. The ballet show performed by the National Ballet of China will be staged at Tianqiao Theater in Beijing from Sept 19 to 22 and at Dunhuang Grand Theater on Sept 27 and 28. [Photo/Xinhua]