2. Go to Xingshan in the northwest of Jiangdu to find Qiao Dainiang, and you can open Dayu Waterway by talking to her.
There is a small green cave on the map, which is the entrance of Dayu Waterway.
4. Cross Dayu Waterway to Changsha.
You will meet Princess Dugu in Changsha, and she will give you a military attache token.
6. From Changsha to the northwest, you can reach Wuguan, and after Wuguan, it is Daxing.
The picture you uploaded is Hanyin Temple, the end of Changsha Giant Wood Maze, which is the map needed by the subplots and has little to do with the main plot.