"Tiangou" has a strong subjective color. The poet projected his feelings into the image of "Tiangou" and compared himself directly with "Tiangou", describing the expansion of self-strength and the liberation of self-spirit. Every poem compares itself to a "heavenly dog", describing the expansion of self-strength and the liberation of self-spirit. Every poem begins with "I" as the subject, and the judgment word "yes" with positive tone is often used to strengthen metaphor and express one's mind directly, thus causing volcanic eruption and surging passion. It fully shows the awakening of self-consciousness and the social spirit of pursuing personality liberation and self-renewal in the May 4th era.

In art, Tiangou has the characteristics of novel imagination, great momentum, intense melody, high tone and steep language, which is unified in the unique and vigorous style of poetry. As far as the conception of poetry is concerned, the poet expresses himself by means of the "Tiangou" that devours the sun and the moon and develops magical associations, and through the bold and exaggerated strength of the "Tiangou", he creates an image of "I" (that is, "Tiangou"), a lyric subject who is bold and rebellious in symbolic poetic images. I was born, I live in the universe, I dominate everything, I am one with the universe itself, and I am reborn through autophagy. The poet firmly grasped the "dynamic" spirit of "I", showed the magical self-power that swept away and destroyed everything, and sang a hymn for the self-power with unlimited potential. This vigorous and powerful image, high style and peculiar brushwork are vivid, vivid and infectious only in the works of Guo Moruo, a romantic master with extremely rich imagination. In the form of poetry, the whole poem begins with the word "I", forming a series of parallelism from beginning to end, advancing layer by layer and strengthening step by step, effectively strengthening the language momentum and rendering the lyrical atmosphere. In addition, the poem is short and pithy, with rapid rhythm and sonorous rhythm. It reads like a raging rain, a surging tide, and it is magnificent.