What are the representative works of the third stage of prose creation in Yan 'an period?

The representative work of the third stage of prose creation in Yan 'an period is Defending Yan 'an. 1947, the Kuomintang reactionaries madly attacked the Shensi-Gansu-Ningxia border region, and Du Pengcheng was sent to the army as a war correspondent of Xinhua News Agency and moved to the northwest battlefield. In the long-term military life, Du Pengcheng took root in the company, actively participated in political, military and various activities at the battalion, regiment and brigade levels, became one with political cadres and military commanders, established a profound revolutionary friendship with soldiers, mastered a large number of vivid and valuable creative materials, recorded a diary of nearly two million words, and wrote hundreds of thousands of words of news, newsletters, essays, reportage and scripts for his novel creation.