Express Option: Suburban Railway Line S2 Take Metro Line 4 from Summer Palace North Gate Station to Xizhimen Station, then transfer to Line 13 to Qinghe Station (about 20 minutes). At Qinghe Station, board Suburban Railway Line S2 directly to Badaling Station (about 1 hour, fare ¥7, supports traffic cards or mobile payment codes). After exiting the station: Walk for about 10 minutes or take a free shuttle bus to the Great Wall entrance.