The first day I would build
Give the city one clear route before adding extras.
- Start with Shangqiu Ancient City and Yingtian Academy while energy is high.
- Use Mangdang Mountain as the natural reset instead of crossing town too early.
the easier plan is Ancient City and Yingtian Academy first, Mangdang Mountain as a separate history outing. 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 Suiyang old area just because it looked close on a map.