The ancient city wall of Changting is still very well maintained. Although it is not very long, walking on it and looking at the surrounding scenery can still feel a certain momentum. The upper city wall is free, and the most interesting thing about the city wall is that the Hakka family's surnames are analyzed. If you are interested, you may wish to take a look. There will be a light show on the city wall at night, and it is still very hard to do.