Both poems are about "climbing high and looking far", expressing the philosophy of "climbing high and looking far".
From Du Fu's Wang Yue:
All the other mountains are dwarfed under the sky. Once I get to the top of the mountain, you will find that I must climb the highest peak of Mount Tai and overlook the mountains. In my opinion, they are so small. The contrast between the small mountain and the high mountain of Mount Tai shows the poet's ambition and spirit of not being afraid of difficulties, daring to reach the top and overlooking everything. ?
From Wang Anshi's "Flying to the Phoenix"
I'm not afraid of clouds covering my eyes, I'm at the highest level: I'm not afraid of clouds covering my distant view, just because I'm standing on the top of the highest Feilai peak here, seeing far and wide. It contains profound philosophy: people should not only focus on immediate interests, but also focus on the overall situation and the long-term.