What does "trying" mean in poetry?

Trial 19 17 In February, the new youth published eight poems of Hu Shi's vernacular, which was the first attempt of new poetry. 19 18 In May, New Youth published the vernacular poems of Hu Shi, Liu Bannong and Shen. Kang and others have also published vernacular poems. On March 1920, Hu Shi published the epoch-making Attempt Collection, which is the first new collection of personal poems in the history of modern literature in China, and has been welcomed by readers. This is the first personal modern poetry collection in history. Since then, more poets have begun to try to write vernacular poems, forming the first school in the history of China literature. The mature symbol of this school of poetry is