How did narrative poetry become active in the early 1950s?

As early as the early 1940 s, the creation of long narrative poems in the liberated areas has shown an extremely active trend. However, in the early days of the founding of the People's Republic of China, poets were eager to praise the new era and new life, and the creation of long narrative poems often needed longer accumulation, more careful conception and deliberation, and needed to be completed on the basis of increasingly rich and mature artistic expression. Therefore, lyric poetry has surpassed the momentum of narrative poetry and become the mainstream of poetry creation.