Tourists appreciate Tiankuang Hall, the main structure of Dai Temple at the foot of Mount Tai in Tai'an, east China's Shandong Province, July 17, 2015. Dai Temple, a popular tourist spot, was first built in Han Dynasty (BC.206-220) for ancient emperors to enshrine "God of Mount Tai" and to hold worship ceremonies. (Xinhua/Feng Jie)