Gourmet snacks: stinky tofu, sugar and oil Baba, stone fish, crayfish, etc. Suggest going to Pozi Street.
You can also go to the ancient city of Fenghuang. Book tickets in advance, leave Changsha on Saturday morning and arrive in the afternoon. Visit the night scene in the evening, play on Sunday and Monday morning, and take a bus to Huaihua on Monday afternoon to transfer to the train. Time is a little tight.