Wucaichi is located at the highest point of Huanglong Main Ditch Scenic Area. It is the most essence of Huanglong Scenic Area. It is the essence of the whole ditch. Tourists to Huanglong mainly watch Wucaichi. Take the cable car up the mountain, walk more than 3 kilometers to feel the scenery, reach the colorful pool, see the pool water is clear and transparent, with the gray white calcium at the bottom of the lake, yellow and green algae selective absorption and reflection of transmission light, the color of the lake water changes, It is worth visiting Huanglong Scenic Area. The most tourists gathered in the colorful pool are here to play slowly, and then return after enjoying it.