The first day I would build
Give the city one clear route before adding extras.
- Start with Tianyi Pavilion and Old Bund while energy is high.
- Use Nantang Old Street as the natural reset instead of crossing town too early.
the easier plan is Tianyi Pavilion and old streets first, then Old Bund or Dongqian Lake. 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 Tianyi Square just because it looked close on a map.