Recently, some free scenic spots have become quite popular. Langwo Mountain has well-equipped facilities; the boardwalk around the crater takes an hour and a half. There's a high-tech exhibition hall at the foot of the mountain. A shuttle bus costs 10 yuan round trip, but it's not far, so you can skip it. As for the other mountains, Haotian Mountain has a temple, Jinshan is still under construction (I didn't climb it), Heishan is said to have very bad roads, so I only viewed it from a distance. Tiger Mountain can be driven up, but there's nothing there, so it's just a viewpoint.