Heilongtan Park is located at the foot of Xiangshan Mountain in the north of the ancient city. It runs upstream from the waterwheel. About one kilometer away, there is a crystal clear spring pool, which is Heilongtan. Here you can shoot the most beautiful Yulong Snow Mountain, watch many national treasure-class ancient buildings in the courtyard, and climb the elephant mountain to overlook the ancient city. It is an important scenic spot in the ancient city. Black Dragon Pool was originally a Dragon King Temple in Lijiang. There are many springs beside the temple, and water accumulates into a pool. Because spring water is like jade, it can reflect Yulong Snow Mountain, also known as "Yuquan Park". This is the water source of Lijiang ancient city. You can see the spring column coming out of the water near the spring pool. The spring water is very clear. Black Dragon Pool is the best place to take pictures of Yulong Snow Mountain. The image of Wukong Bridge, Deyue Tower, Snow Mountain and the reflection of Snow Mountain in Black Dragon Pool has already become the classic postcard of Lijiang, and also one of the most popular scenic spots for tourists to take pictures in Lijiang. Take pictures of Yulong Snow Mountain in the morning and in the evening. The best light is to take pictures of Yulong Snow Mountain in the morning and in the evening. Especially when it's sunny, the blue sky, white clouds and snow mountains are reflected in the pool water, which is as beautiful as a picture. In addition, if time is enough, you can climb the elephant mountain and overlook the panoramic view of Dayan ancient city. It takes about half an hour to climb to the top of the mountain, but it can not be climbed in the evening. It is suggested that we go there as soon as possible.