Cuihua Mountain lies 30 km away from Xi'an City, and is known for its odd peaks and strange caves and clean pools as well as ancient temples. In the second year (109BC) of the Yuanfeng year in the Western Han Dynasty (206BC-8AD), the Taiyi Palace was constructed at the mountain pass (Dayu Pass), hence the name Taiyi Mountain. Scenic spots mainly include the Taiyi Pool, the Wind Cave, the Ice Cave, and the Cuihua Temple, etc. The Taiyi Pool is a lake between mountains, and is said to be formed by earthquake in the Tianbao reign of the Tang Dynasty (618-907). It is surrounded by high and steep mountains, and has jade green water and slightly rolling waves. The Wind Cave, formed by two big granite rocks, lies west of Taiyi Mountain, and is 15 meters high and 40 meters deep. It feels cool inside thanks to the flowing air through the cave. To the north of the Wind Cave, there lies the Ice Cave. Hard ice can be easily found in it even in summer. There is a Zhengcha Reservoir in the mountain. When water runs down, it presents a magnificent scene.