Introduction to the Third Cave Group: The Third Cave Group is the Taizhen Cave, which was inscribed by Wei Zhongxian, the eunuch of the Ming Dynasty, as "the best cave in the world". It is located in Dongkou Township, Shangfang District. Taizhen Cave, the upper cave reaches the sky, like a collapsed well. The middle cave is located halfway up the mountain. The entrance is like an arch, more than 2 meters high and 2 meters wide. There are four characters "First Cave Heaven" carved on the cliff, and the left side is inscribed with the year of Ming Wanli Suici Jiachen (1604). The entrance to the lower cave is smaller and is located next to the road. Outside the cave is surrounded by clear water, gurgling like music, and inside the cave stands strange rocks. Stalagmites are like a forest, and stalactites hang upside down. They are as big as a dragon tent, with a canopy hanging down, and as small as a steel bell. They are exquisite and clear, endlessly changing, and the image is lifelike.