Introduction to Shidong Cold Spring: Shidong Cold Spring is the largest diversion waterfall in the Jiangnan region and the main entrance to Jiangsu Yushan National Forest Park. The upper reaches of the scenic spot is a natural stone cave called Laoshidong. There was a cold spring flowing out of the cave. The middle and lower reaches are canyons formed by rainwater all year round, surrounded by large bamboo forests on both sides. The entire scenic spot is laid out in the shape of the Chinese character "Wu", and there are scenic spots such as the green turtle crouching in the stream, the bamboo sea listening to the waves, Qixia Pavilion, the waterfall in the stone cave, and the sacred cow playing in the water.