Introduction to Shiwu River in Canglong Valley: Canglong Valley was originally named Qinglong Valley and Longtou Valley. There is a valley to the southwest of Xieliang Stone. There is a ridge in the valley, which is winding and undulating. From a distance, it looks like a green dragon descending from the sky with its head and tail wagging. There is a hilltop at the front of the ridge, located between the peaks on both sides. It looks like a dragon's head. It has the potential to rush out of the valley and seize the old dragon pool.