What is the theme of my poem "Broken Palm"?

"I Break My Palm" is the work of Dai Wangshu, a poet in Yuxiang, which expresses his feelings for the suffering motherland under the Japanese invaders' bars. The Damaged Palm is both realistic and a portrayal of the poet's unyielding will. On the one hand, poetry describes the darkness of the occupied areas from reality, showing deep concern for the fate of the motherland. On the other hand, the description of the beautiful scenery of the liberated areas is mainly freehand brushwork, and the land symbolizing "eternal China" is deeply praised.