Introduction to Liu Gongyan: Liu Gongyan is located at the top of Xianfeng Peak and is known as the "Little Grandma". The entire rock mass has no vegetation, as if painted with black ink, and is often shrouded in clouds and mist all year round. The four rooms of Liugong Cave in the rock are connected, which is steep and difficult to climb, and there are many pilgrims. The majestic wind password at the top of the cave is intimidating to climbers.