The science fiction film starts shooting at the Three Natural Bridges, a series of natural limestone bridges located in Fairy Maiden Town, Wulong County. The three bridges are all named after dragons, namely the Tianlong (Sky Dragon), Qinglong (Azure Dragon) and Heilong (Black Dragon) Bridges. They are part of the South China Karst UNESCO World Heritage Site. [Photo by Liu Qiang/China.org.cn]