Introduction to Shenying Rock: Shenying Rock, also known as Gufeng, is a quartz sandstone from the Great Wall System. This rock is nearly 100 meters high and looks like an eagle staring into the distance, about to spread its wings and soar, standing deep in the mountain. Its formation is related to the joints formed by tectonic movements. After being eroded by wind and rain, it finally became what it is today.