There is a breathtaking underground wonder in Wulong, Chongqing - Furong Cave. Furong Cave in Wulong, Chongqing is a key national scenic spot in China. It is the only place in China that has been nominated as a "cave" and a "World Natural Heritage". Furong Cave was formed more than 1.2 million years ago, with a total area of 37,000 square meters at the bottom of the cave. The cave is huge and rich in sediments, and has been recognized by cave experts from all over the world. It is ranked among the world's three largest caves together with the American and French caves. When you step into it, you feel like you have traveled through time and space instantly and are in a mysterious and ancient world. After survey by China and Australia, it was praised as a "wonder of the world", "underground art palace and cave science museum".

One of the most shocking sights is the magnificent "Ten Thousand Arrows Hanging on the Wall". There is an illusion of suddenly breaking into an ancient battlefield. Thousands of arrows hang upside down on the stone wall, with a cold light and overwhelming momentum. This is the unique wonder of Furong Cave - "Ten Thousand Arrows Hanging on the Wall". When you take a closer look, you will find an even more magical sight. Look, the middle is empty, like a crystal clear straw. This is the magical masterpiece of nature - the "goose pipe". It is like a work of art gently blown by nature with a straw. It is exquisite and unique. Looking at the top, there are even water droplets hanging like "dewdrops". This is no ordinary water drop, it means that this "goose tube" is still full of life and is still growing slowly! And those "curly stones" that look weak and slender, but are full of fantasy colors. It is also what we often call "stone flowers", which is even more amazing. Some of them are like very thin hairs, and some are like small bushes of grass, lying on the rocks in a crooked way, growing wantonly and without any rules, but they are so beautiful that they are soul-stirring. The ancients often said that "a stone blooms and a horse grows horns" to describe those things that are impossible to happen. However, "stone blooming" in Furong Cave is a wonderful scene that takes place every day. So, how do stones "flower"? In fact, there is a unique set of natural principles behind this. When the channels inside the stalactite are blocked, water cannot flow smoothly and has to slowly seep in from the outside. Due to the extremely slow flow of water, the carbon dioxide inside the stalactite will gradually escape quietly during this process, while the minerals carried in the water will be deposited bit by bit. These minerals first form a small bump at a certain point, and then over time they grow in all kinds of unexpected directions. Horizontally or diagonally, you can do whatever you want without any rules, so these "stone flowers" with different shapes and random growth are formed. Each "stone flower" is a work of art carefully "shaped" by the earth over tens of thousands of years. They have witnessed the changes of time and carry the mysteries of nature.