In winter days, picturesque landscape of rime appears in Benxi Water Cave, Liaoning Province. Guqin Lake in front of the cave is the best place to enjoy the scenery. The cave stays warm in winter with a constant temperature at 12 degree Celsius. The Guqin Lake outside the cave also remains unfrozen all year round. When the cold and warm air from outside and inside the cave converge, the pure, white, and clean rime is therefore formed.