We were lucky enough to see a sea of clouds from the cable car up the mountain—it was breathtaking! Tianmen Cave was also stunning. The climb wasn't as tiring as I'd imagined because there were handrails to hold onto, and the stone steps were well-maintained. The only downside was the upper half, which was quite steep, and there were no flat areas along the way. To rest, you had to sit on the steps, which had a few viewing platforms along the sides. I completed both the east and west routes, both being loop trails with no backtracking. Both routes have 60-meter-long glass walkways available, but you need to pay an extra 5 yuan for each. The west route has a suspension bridge (the east route doesn't), while the east route allows you to climb to the top and overlook the surrounding area. Overlooking Zhangjiajie City (West Route not included), the entire route, even at a slow pace, takes a maximum of 6-8 hours, which is sufficient for one day.
Route A: Take the cable car from the city center directly to the East and West routes. Explore the East and West routes first, then take the six-section mountain-penetrating elevator down to Tianmen Cave. Walk down the stone steps to Tianmen Cave, or take the six-section ascending elevator down to the bottom of Tianmen Cave (Route A does not allow access to the stone steps to Tianmen Cave; for those who wish to ascend Tianmen Cave, routes B or C are recommended). Then walk along a boardwalk to the Tianmen Mountain Expressway, take the expressway down the mountain, and then transfer to the scenic area shuttle bus to the lower station of the Tianmen Mountain cable car in the city center. Route B: The complete opposite of Route A. This route is for those who want to climb up to Tianmen Cave but don't want to climb back down, and who want to experience the Tianmen Mountain cable car directly down to Zhangjiajie city. Note that Route B recommends exploring the East Route first, then the West Route, to avoid excessive walking. The cable car entrance is near the West Route, and when it's crowded going down, you'll need to get a reservation number from Li Na's Villa next to the cable car entrance (no need to get it in advance, as Li Na's Villa is usually closed when you first go up). If it's not crowded going down, you don't need a reservation number and can go directly down. Just queue, everything depends on the arrangements on the mountain.
Route C: This combines the ascent route B with the descent route A. It allows you to walk to and from Tianmen Cave, but you cannot take the direct cable car from Tianmen Mountain to Zhangjiajie city (7 kilometers in total).
Route A is the most crowded, and the vast majority of tour groups take it. When we descended from Route B to the lower cable car station at 3 PM, we still saw a huge queue for Route A, probably at least two hours long. It was much more crowded than earlier in the morning, but even then, Route A was much more crowded than Routes B and C in the morning, and this is during the off-season.