Introduction to Jiulong Nest: A deep and long canyon leads from the birthplace of the famous tea bush "Dahongpao" to Tianxinyan, commonly known as Dakengkou. The cliffs on both sides of the canyon are continuous and undulating, shaped like nine dragons. Between the nine dragons, there is a small peak with a slightly rounded top that looks like a dragon pearl. There is a saying that nine dragons play with pearls.