In September 1944, ** made a wise decision to send Liu Zijiu and Han Jun to lead the cadre brigade south to western Henan to carry out the anti-Japanese struggle. Before leaving, he cordially met with Liu Zijiu and Han Jun to jointly create the direction of the anti-Japanese base area and the united front work in western Henan.
On December 31, 1944, Han Jun and Liu Zijiu held the first working meeting on the creation of an anti-Japanese base in western Henan in Heipao Village, Xin'an County, to jointly formulate a strategic plan. Han Jun stressed that it is necessary to closely unite with the broad masses of the people, rely on them to go all out to wage an anti-Japanese guerrilla war, win over and unite local forces, focus on exterminating the armed bandits, and save the people of western Henan, who are in deep distress.
At the beginning of 1945, Han Jun, He Chongsheng, Liu Jukui and others led the 6th detachment of the 8th Division, the 18th Regiment and the 59th Regiment of the Eighth Route Army to advance from Xin'an County to Shaanxi County. They quickly pursued the puppet recalcitrant forces and were unstoppable. The bandits fled, and Han Jun led the soldiers in hot pursuit and successfully surrounded the bandits in the Gongqian District of Shaanxi County. In the fierce battle, more than 700 people were killed by the bandits, more than 300 people including the enemy's deputy commander, chief of staff, and brigade commander were captured, and a large amount of ammunition was captured.
The anti-Japanese base areas in western Henan thus opened up the situation and basically formed and consolidated. On February 4, 1945, the Second Prefectural Committee and the Second Division of the Communist Party of China in Western Henan were established in Xicun, Luoning County, and Han Jun was appointed as a member of the Party Committee of the Henan Military Region of the Communist Party of China and the commander of the Second Division of Western Henan.
In March 1945, Zhou Zhongying and Zhang Xiding, the first commissioners of the Communist Party of China, assisted the uprising of the 17th Division of the 38th Army of the Kuomintang. By July 17, the 17th Division had successfully revolted. Han Jun warmly welcomed the officers and soldiers of the uprising in front of the palace, Touyu, and Li Village.
On March 27, 1945, Han Jun led the Eighth Route Army to rescue him. At an extremely critical moment, Han Jun stepped forward and successfully stopped Shangguan Ziping's rebellion. After that, he led his team in hot pursuit, successfully quelled the rebellion, and defeated the bandits.
On May 26, 1945, Shangguan Ziping planned the "Western Henan Incident", which led to a rebellion. Han Jun returned in time and commanded the army to quell the rebellion. In the areas of Luoning and Mianchi, the officers and men of the Eighth Route united and cooperated to put down the rebellion in an all-round way, and won a decisive victory.
During this period, Han Jun loyally implemented the first-class decision, led the cadres to transfer to the Taiyue Liberated Area, and preserved an important force for the final victory. In the War of Liberation, Han Jun was appointed by *** and *** to lead the People's Liberation Army into western Henan, and finally realized the comprehensive liberation of western Henan.