 In agreement with KMT Shaan-Gan-Ning Border Region and Shanxi-Chahar-Hebei Border Region were created.They were controlled by CCP.After the commencement of full-scale war between China and Japan, the Communists forces fought in alliance with the KMT forces during the Battle of Taiyuan, and the high point of their cooperation came in 1938 during the Battle of Wuhan.