Mengmen is known as "Little Yan 'an in Lvliang". As early as 1930, there was an underground party member in China to transmit information to the underground party organizations in northern Shaanxi. 1935, Meng Men Xue Jiaping established Hedong Party Branch in Zhong * * * to organize farmers to defend themselves. 1936, the enemy strongholds and puppet government agencies in Qiaokou were removed, clearing the way for the Red Army headed by Mao Zedong to March eastward. During the Red Army's eastward expedition to War of Resistance against Japanese Aggression, the only district-level organization in Lishi County was born in Mengmen. From 1940 to 1949, the Central Committee of the Communist Party of China and the district government were established on the south slope of Mengmen, Yaotou and Mujiapo, which lasted for ten years. In the eight years of the Anti-Japanese War, Lishi County Committee of Zhong Shi moved to the area from Xuejiaping to Mengmenqikou, which lasted seven years and eight months. In the areas of Shi 'an, Xipo and Dianze in Mengmen, anti-Japanese democratic county governments, anti-Japanese national salvation associations, youth national salvation associations, agricultural national salvation associations, workers' national salvation associations and women's national salvation associations were established, and anti-Japanese guerrilla brigades, anti-Japanese armed self-defense groups and anti-Japanese organizations were established in Lishi County. In the bloody battle of the eight-year anti-Japanese war, every inch of land here was filled with the blood of martyrs; The young people here are heroes who fought against Japan and killed the enemy; The women, children, old and young here are all models before supporting the army. At the same time of resisting Japan and saving the nation, the mass production of soldiers and civilians in the base areas, rent reduction and interest reduction, land reform and mutual assistance and cooperation are also in full swing.

Hu Ceng, former permanent secretary of the Central Secretariat of the Communist Youth League and former vice president of China Academy of Sciences, led the revolution here, and He Long, then commander-in-chief of Jinsui, planned to wipe out the Dayan puppet army here. Bai Jian, former deputy secretary of the First Ministry of Machinery Industry, former chairman of Gansu Province and General Mu, the father of the Qinghai-Tibet Highway, left revolutionary footprints here.