A main form of China's modern new poetry. As the result of the May 4th literary revolution, it was closely related to the revolutionary changes in content at that time, and the poetic form was liberated from the rigid meter of China's old-style poems. Writing in modern vernacular Chinese is not bound by external rhythm and syllables, is not bound by any framework, and has no fixed paragraphs, lines and words. It is the embryonic form of free poetry that first appeared in the New Literature Movement. Therefore, although free verse is called a form, it has no specific poetic form, but it is just a general term for this kind of free verse. Since the eve of the May 4th Movement, some participants in the New Literature Movement have tried and explored free verse, and Hu Shi and others have made painstaking efforts to get rid of the influence of old poetry. It is Guo Moruo's Goddess that really breaks through the barriers of old poetry in content and form and shows the spirit of complete rebellion, which is the representative of China's free poetry collection towards independence. In the process of its emergence and development, free verse is obviously influenced by foreign poetry, such as Whitman's poetic style in the United States has a great influence on the creation of Guo Moruo and others, and Tagore's poetic sentiment in India has also been accepted by many people. Zhu Ziqing divided the poems of the first 10 years after the May 4th Movement into three schools: free verse, metrical verse and symbolic verse, and fully expounded and affirmed the free verse. During the Anti-Japanese War, due to the advocacy of Ai Qing and Tian Tian, free verse gained great prosperity. Ai Qing's view on the prose beauty of poetry further explains the existence of free verse in theory. "Calling poetry out of the silent study and solemn pulpit, let it be honed in the people's suffering and struggle, and sing today and tomorrow for the people with a simple, natural, clear and sincere voice: this is the fighting tradition of China's free poetry."