Friendship Pass is one of the nine famous passes. The better way to visit it is from Zuofu Mountain, which is 102 meters long. There are several forts on it. From Zuo Fu Shan, you can go down to Guan Lou directly. After visiting the Guan Lou, you can go up Youyou Fu Shan (Jinji Mountain), 1250 meters, and climb Jinji Mountain. You can see the beautiful scenery of Fang Yuan, which is tens of kilometers across the border between China and Vietnam.