Introduction to Yanglan Valley: Yanglan Valley originates from Jiaoding Mountain and Beijimiaozi, with a total length of about 4 kilometers. It is named after ancient myths and legends that the divine sheep intercepted and poisoned the stepmother of a shepherd boy, turning the shepherd boy into an immortal. In the ditch, there are luxuriant forest vegetation and gurgling water. There are many landscapes such as Smooth Beam, Liangquan, Yanglan Spring, Shimengou, Hiding Cave, Yandian Gate, Tick Tok Spring, and "Three Steps Back". It is located in the sun of Culai Mountain, southeast of Taipingding.