TravelGreatWall works mainly in Mutianyu Great Wall small group tour, Great Wall car rental service, Beijing airport layover tour. Jinshanling Great Wall hiking towards to Simatai was amazing !"Not been on the Great Wall, not a great man."—Chinese proverb.The least spoiled part of the Great Wall.The hike from the west Jinshanling to the east Simatai is the most challenging Great Wall hike in Beijing.