A tourist plays a "water to ice" game by splashing water into the cold air by the Halha River in the city of Arxan of Hinggan League, north China's Inner Mongolia Autonomous Region, Jan. 1, 2026. Despite Arxan's frigid winter cold, this geothermally-affected section of the Halha River never freezes, which attracts great amount of tourists in winter. (Photo by Wang Zheng/Xinhua)