Introduction to Black Dragon Pool: Black Dragon Pool is named after the legend that a black dragon bathes here. Two buildings fell down to form two pools. The upper pool is called "Dragon Palace" and the lower pool is called "Dragon Spring". It emits beads and jade, and the green water maneuver. There is the Black Dragon King Temple next to the Tan Tan. The waterfall cascading down from the Tan Tan is tens of feet high and more than ten meters wide, which is breathtaking.