Fangfeng Mountain, also known as Fengshan, is located about 8 kilometers east of Wu Kang. Its quarrying began in the Tang Dynasty, flourished in the Song Dynasty, and was later banned. In the second year of Kangxi (1663), Wu Kanghou, a magistrate of Wu Kang, visited the mountain and wrote a brief history of closing the mountain. Fenggong Cave, Stone, Longchi, Stone House, Xianren Bridge, Baizhangtan and so on are mentioned in "Closing the Mountain". This is nothing more than the Shidang site. 1996, in order to develop tourism, people explored the "Fenggong Cave" and cleared nearly 100 meters of slag down the slope. They saw many gaps in the cave, but for safety reasons, they didn't reach the bottom of the cave. There is also a "Little Bat Cave" in Fangfeng Mountain, which was developed into a tourist attraction at 200 1. Two iron cones were unearthed when cleaning the slag in the cave. Locals call it "Stone Crab", which is now in Deqing County Museum. It was later verified that it was a stone cutting tool.
Because the Fangfeng Temple at the foot of the mountain was "four years of Hongwu in the Ming Dynasty, the gods were also sacrificed and firewood mining was forbidden", the gold mining center of Wukangshi was finally banned by the Ming government, so it was moved to Shishan, Tashan and Hushan. Lion Mountain and Tiger Mountain have no liger, so they are named after the mined mountain looks like liger. At present, a boulder with a height of more than 20 meters stands in the middle of the lion mountain, which was left over from quarrying. The height was recorded before mining, which shows that its mining volume is huge. One is building stone. Wukangshi building material is a kind of fused tuff belonging to volcanic eruption rock, which has moderate hardness and is suitable for ancient mining technology and productivity level. In the natural state, most of them are lavender and a few are yellowish brown, but once the surface is eroded by wind and rain, it will be oxidized into beautiful purple. In ancient times, purple symbolized auspiciousness, so people used to call this kind of stone "Wu Kang Purple Stone". This kind of stone has clear texture, which can be cut into large-scale building materials and carved into complex artistic patterns. It absorbs water slightly, and the wet rock mass is often crawled by vines, which gives people the beauty of simplicity. Wukangshi is a kind of sandstone. Even if the processing is smooth, the surface is still astringent, and it will not slip when stepping on it in the rain. It is an excellent stone for the ancient bridge.
The other is the stone used for overlapping mountains in the garden, which is yellow-brown in color, with weathered rocks on the surface, unclear texture and irregular blocks. According to literature records and textual research, they are all used for overlapping mountains in gardens, such as the famous rockery in Shanghai Yuyuan Garden. Horticultural circles used to call this kind of stone "Wu Kang Yellowstone". There is also a marine siliceous rock, which is gray and black in color and is a good material for overlapping mountains in gardens. Jiangsu, Shanghai and other places have few stone resources, or there are stones without materials, or there are stones that are difficult to use. But they are quite familiar with stones, and the names of stones such as "Wukangshi", "Qingshi" and "Granite" can be seen in the inscriptions of cultural relics and even cultural protection units. Mr. Zhu Jianmin, archaeologist and director of Deqing Cultural Relics Protection Institute, compiled a picture album "Wu Kangshi Architecture and Art", which was published by Xiling Publishing House.