Introduction to Xuannv Palace: Covering an area of ​​more than 5,000 square meters, it is the largest Qianqiu Tian in the cave. Behind the more than 30-meter-high jade curtain in the cave, there is a stone like Jiutian Xuannu wearing a phoenix crown on her head, holding a baby in her arms, with a dignified manner, looking around all living beings with kind eyebrows and kind eyes. In addition, there are also landscapes such as Zhendong Jade Needle, Xiantao Longevity Fruit, and Dressing Mirror, which integrate mountains, water, wells, springs, rocks, and waterfalls. Professor Zhang Shouyue, director of the Cave Laboratory of the Chinese Academy of Sciences, praised it as "a mysterious girl is cast by dropping stones, and nine heavens are carved by the underground river." ” natural gallery.