The core is the bird, which expresses the theme that the author loves the suffering motherland and people.
From the poem "This land was attacked by a storm", "This river is always surging with our grief and indignation", "This irritating wind is blowing endlessly, and there is an incomparably gentle dawn from the forest ..."
As can be seen from the modifiers, the earth is suffering, the people's grief and anger, their yearning and hope for the light. ...