Introduction to Huanglong Cave: Huanglong Cave is located on the south bank of Taihu Lake. It was originally a Taoist cave paradise. It was called "Jinjing Cave" before the Tang Dynasty. The diameter of the cave is 14.8 meters and the vertical depth is 37 meters. There are many cliff carvings on the cliffs around the cave. Authentic works by Huang Tingjian, Su Dongpo, Du Mu, Zhao Mengfu and other famous figures, among which are the four characters "Huanglong Cave Sky" engraved on the huge stone "Zhangren Peak". There is a cool breeze blowing inside the cave, and you can see a mysterious palace with shining colors deep inside, called Huanglong Palace.