It is recommended to drive. There are four parking lots, each corresponding to different trailheads: Parking Lot 1 is for public buses and is close to the South Gate City entrance; Parking Lot 2 is for private vehicles and is also near the South Gate City entrance; Parking Lot 4 is west of Parking Lot 3 and is less central; Parking Lot 3 is centrally located slightly north of the Great Wall loop, allowing access to both the South Gate and North Gate. If you're unsure whether you can complete the loop, it's suggested to park at Lot 3.