Free opening, you can go up to the city wall of Kuiwenmen to take a look, open the door at 10 am, the stairs will go up through Kuiwenge first, it is also free, you can go in advance to go around, there is a story on the wall, here is praying for academics to become high school Zhuanyuan. There is also a small shop in Kuiwen Pavilion, which sells postcards and can be stamped with a commemorative postmark, but I didn't see the postbox nearby, so I had to take it to another place to send it. After turning Kuiwen Pavilion, I went up to the city wall and turned down for about half an hour.