The main contents of Yan 'an spirit are: seeking truth from facts, integrating theory with practice, serving the people wholeheartedly, and the spirit of self-reliance and hard struggle. Spiritual connotation: 1, self-reliance, hard-working entrepreneurial spirit. China's * * * production party started with hard struggle, while China's * * * production party and the people's cause are also constantly developing and growing through hard struggle. Looking back on the history of the Party, from the founding of the Party in Shanghai to Jinggangshan, from Zunyi Conference to Yan 'an, from Xibaipo to seizing state power, from the founding of New China to the new era of reform and opening up, hard work is a work style and an ideological style, which is the fine tradition and political nature of the China * * production party, and it is to unite the hearts and minds of the Party and inspire the whole party and the people to work together to achieve national prosperity and national rejuvenation. 2. The spirit of serving the people wholeheartedly. Yan 'an period is an important period for China's * * * production party to establish people's political power in some areas of China and continuously expand its ruling area. China * * * production party always regards the interests of the broad masses of people in China as its fundamental purpose, and in Yan 'an period, it loudly put forward the slogan of "serving the people", and earnestly practiced it in the whole party. At that time, the government of the Shaanxi-Gansu-Ningxia Border Region was called "democratic politics". Yan 'an period was a period when the Communist Party of China (CPC) scientifically summarized both positive and negative experiences, successfully promoted Marxism and achieved the first historic leap in theory. Chairman Mao's many important works, such as Strategic Issues of China Revolutionary War, Theory of Practice, Theory of Contradiction, Protracted War, Theory of New Democracy, Theory of Coalition Government, etc. It was all completed during the Yan' an period. 3. The ideological line of seeking truth from facts. It was also during the Yan 'an period that China's ideological line of * * * production party was realistically summarized. Practice shows that only by emancipating the mind can we seek truth from facts; Only by seeking truth from facts can we truly emancipate our minds. In the new century and new stage, we should have new ideas for development, new breakthroughs in reform, new prospects for opening up and new measures for all work in accordance with the requirements of the 16th National Congress. This is called persisting in emancipating the mind and seeking truth from facts.