Song Guochao, successor of the national intangible cultural heritage of shadow play, hangs his puppets in Dalian, Northeast China's Liaoning province, June 4, 2015. The Chinese shadow play is performed by manipulating flat leather puppets against a lit-up translucent screen. The art form was registered in the Representative List of the Intangible Cultural Heritage of Humanity by the UNESCO in 2011. [Photo by Zhang Chunlei/Xinhua]