Aerial photo taken on May 21, 2019 shows technician Gu Heli(Up) on his way examining the cable car ropeway with colleague at Huangshizhai scenic area in Zhangjiajie, central China's Hunan Province. Zhangjiajie, a picturesque tourist spot in central China, is regarded by many tourists as an elysium on Earth. Its pillar-like mountain formations are prototype for Avatar's fictive diorama of hanging, mist-shrouded peaks. To secure the safety of tourists, many technicians like Gu Heli pay full attention on inspecting and safeguarding the transport infrastructures. (Xinhua/Wu Yongbing)