The first day I would build
Give the city one clear route before adding extras.
- Start with Mount Heng and Nanyue Grand Temple while energy is high.
- Use Shigu Academy as the natural reset instead of crossing town too early.
the easier plan is Mount Heng and Nanyue Temple as one route, Shigu Academy and the river as the city route. That keeps the day readable instead of turning every good name into a separate detour.
I would rather leave one place for tomorrow than drag a tired route through Hengyang old center just because it looked close on a map.