During the Spring Festival, when visiting Pan'an, there are elderly people who can only choose 18 Vortex scenic spots with low physical requirements, which not only refers to the recommended information from the shortcut, but also consults the local waiters. When I came, I felt the scenery was very good, and quite different from other mountain canyons, it was a geological museum. What is more disappointing is that online booking is inconvenient, several days in advance, and ticket preferential policies are also discounted.