There are Danxia landforms in many places in China and Danxia landforms in Wuyi, Zhejiang Province. Among them, Kongtong Mountain of Dahongyan has become the essence of Danxia in Wuyi because of its Dahongyan, known as "the largest red wall of Danxia in the world". Through Niubi Cave, through Easy Ridge and Danxia Gallery, you can see the world's wonders, where you can see the Dahongyan "the largest red wall of Danxia in the world". Dahongyan is divided into two parts because of its wall, such as two similar open and close stone gates, which are also known as Dahongmen. The relative height difference of Dahongyan red wall is more than 300 meters, and its width is more than 500 meters. It has a great momentum and the largest scale of Danxia red wall in China. At the same time, its rock is red, which is the unique color of antique paintings.