The eight characters "Do it yourself" and "Have enough food and clothing" are the famous inscriptions written by Chairman Mao Zedong. In 1943, the General Political Film Troupe of the Eighth Route Army shot the documentary film "Combining Production and Combat" (later renamed "Nanniwan"). When the filming of the film was about to be completed, Wu Yinxian, who was the photography team leader at the time, went to Zaoyuan, the seat of the Central Committee of the Communist Party of China in Yan'an, and asked Chairman Mao Zedong to write an inscription for the film. Mao Zedong readily agreed. Because it was too dark inside the cave, Mao Zedong went outside to write. He inscribed the words "Do it yourself" and "Have enough food and clothing" on two pieces of white letterpress paper, and signed his name. Each inscription is 210 mm long and 160 mm wide. During the inscription process, Mao Zedong was writing and Wu Yinxian was filming, and it was finally made into a movie. In 1959, Wu Yinxian donated two inscriptions by Mao Zedong that he had collected for 16 years to the Military Museum. It is now on display in the Anti-Japanese War Museum. The eight words "do it yourself" and "enough food and clothing" are not only the calligraphy treasures left by Mao Zedong for us, but more importantly, whenever we see these two famous quotes, we are reminded of the difficult years of the Yan'an mass production movement. After the Anti-Japanese War entered the stage of strategic stalemate, the Japanese army launched a large-scale military attack on the liberated areas, carried out brutal "mopping up" and economic blockade, in an attempt to completely destroy the anti-Japanese base areas behind enemy lines. The Kuomintang die-hards also actively pursued anti-Japanese policies and stopped providing food and salary to the people's army. Coupled with the continuous natural disasters in successive years, extremely serious difficulties have arisen in the liberated areas. What to do when faced with serious difficulties? In order to persist in the long-term war of resistance and win the final victory of the war of resistance, the Central Committee of the Communist Party of China issued a call to launch a large-scale production movement. On December 20, 1938, "New China News" published an editorial titled "Extensively Carry Out the Large-Scale Production Movement," requiring commanders and fighters in the liberated areas to "produce while working, and connect work with production." In February 1939, Mao Zedong gave a vivid and profound speech at the Yan'an Production Mobilization Meeting. He said: "Faced with serious difficulties, should we starve to death? Disband? Or do it ourselves? No one will starve to death. Yes, no one is in favor of disbanding. Let’s do it ourselves! This is our answer. "In accordance with the policies of "do it yourself, produce for self-sufficiency" and "develop production and ensure supply" proposed by the Party Central Committee and Mao Zedong. In February 1942, an instruction was issued to the entire army, requiring all units in the army to fight, produce, and learn at the same time, and carry out production activities according to different environmental conditions. Commander-in-Chief Zhu De also proposed the "field farming" policy. From then on, the large-scale production movement was launched vigorously in the Shaanxi-Gansu-Ningxia Border Region and the anti-Japanese base areas behind enemy lines. The 359th Brigade of the Eighth Route Army, in accordance with the call of the Party Central Committee, went to Nanniwan and other areas south of Yan'an in the spring of 1941 to carry out military reclamation in this overgrown and uninhabited place. After three years of hard work, the officers and men of the 359th Brigade opened up more than 120,000 acres of land on the barren mountains, turning Nanniwan into "Northern Shaanxi and Jiangnan" where crops, cattle and sheep are everywhere. The 359th Brigade became a banner of the large-scale production movement, and the large-scale production movement was also widely carried out in various anti-Japanese base areas behind enemy lines. In the guerrilla zones, the troops dispersed to fight while carrying out production, implementing a "combination of labor and force". Many guerrillas plowed the fields during the day and trained at night. Through the large-scale production movement, the military and civilians in the liberated areas basically solved the problem of food for the military and civilians, achieving the goal of having enough food and clothing by themselves, thus overcoming serious difficulties, breaking the economic blockade of the Kuomintang die-hards, and fighting for the final victory of the war of resistance. Victory laid the material foundation. The two inscriptions "Do it yourself" and "Have enough food and clothing" have become family heirlooms and precious historical relics that guide us in overcoming difficulties and working hard.

I found it online. Thanks for the points.