Nanniwan, located in Yan 'an City, Shaanxi Province, is a place of great significance in the revolutionary history of China. During the War of Resistance against Japanese Aggression period, in order to support the anti-Japanese front line, the Eighth Route Army and the New Fourth Army, under the leadership of the China Production Party, waged arduous reclamation struggles in Nanniwan.

194 1 year, the eighth route army headquarters decided to launch a large-scale production campaign in nanniwan to solve the material supply problem of the troops. At that time, Nanniwan area was barren in land, lacking in resources, and years of war, and people's lives were miserable. In order to change this situation, officers and men of the Eighth Route Army and Qi Xin, a local people, worked together to carry forward the spirit of self-reliance and hard struggle and carried out large-scale land reclamation and afforestation.

In the process of land reclamation, we overcame all kinds of difficulties, such as severe cold and heat, diseases and plagues. They use simple tools, such as hoes and shovels, to dig tree pits and plant trees. After several years of efforts, the forest coverage rate in Nanniwan area has gradually increased and the ecological environment has been improved. At the same time, the army also carried out agricultural production and planted food crops, which solved the army's food problem.

The story of land reclamation in Nanniwan shows the indomitable and self-reliant spirit of the people's army and people under the leadership of the Communist Party of China. This spirit played an important role in the revolutionary history of China, and had a far-reaching impact on the subsequent socialist construction and development. Nowadays, Nanniwan has become a forest scenic spot full of green, attracting many tourists to visit and study.