The first day I would build
Give the city one clear route before adding extras.
- Start with Daqing Oilfield history and Longfeng Wetland while energy is high.
- Use Daqing Museum as the natural reset instead of crossing town too early.
the easier plan is museum or oilfield context first, Longfeng Wetland separately when weather allows. 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 city parks just because it looked close on a map.