If you stay in Lu 'an for a week, I suggest you find a place to stay in the city, have a good rest and go rafting in Longjinggou first. One day is enough. In the evening, I will look at the night view of Lu 'an and taste the local food. After that, you can go to Tiantangzhai, where you need to stay for at least 2 days to get clues.