The First National Congress of the Party : The birth of the Communist Party of China.

In 1921, the First National Congress of the Communist Party of China was held in Shanghai, marking the founding of the Communist Party of China.

The Second National Congress of the Party : Put forward the democratic revolutionary program against imperialism and feudalism.

In 1922, the Second National Congress of the Communist Party of China was held in Shanghai. For the first time, it put forward a thorough democratic revolutionary program against imperialism and feudalism, aiming for socialism and communism.

The Third National Congress of the Party : The Party's congress held during the great revolutionary tide.

In 1923, the Third National Congress of the Communist Party of China was successfully held in Guangzhou. It achieved cooperation between the Kuomintang and the Communist Party, while maintaining the independence of the Communist Party in politics, ideology, and organization.

In 1924, the First National Congress of the Kuomintang was held, establishing the three major policies of uniting with Russia, uniting with the Communist Party, and supporting farmers and workers, forming the New Three People's Principles, marking the official formation of the first cooperation between the Kuomintang and the Communist Party.

The Fourth National Congress of the Party : The Party's congress held during the great revolutionary tide.

The Fourth National Congress of the Party was held in 1925, raising the issue of the leadership of the proletariat in the democratic revolution and the issue of the worker-peasant alliance.

The Fifth National Congress of the Party : The Party's congress held during the great revolutionary tide.

The Fifth National Congress was held in 1927. Although the congress criticized Chen Duxiu's right-leaning mistakes, it failed to provide practical answers to the major issues urgently needing to be addressed in the struggle for revolutionary leadership.

The Sixth National Congress of the Party : The only Party congress held abroad

The Sixth National Congress was held in Moscow in 1928. The line adopted by the Sixth National Congress was basically correct and played a positive role in the development of the Chinese revolution. However, it lacked a correct assessment and policy regarding the role of the middle class and the contradictions within the reactionary forces, which had a negative impact on the development of the Chinese revolution.

The Seventh National Congress of the Party : Establishing the guiding position of Mao Zedong Thought throughout the Party

During the Long March in 1935, the Zunyi Conference elected Mao Zedong as a member of the Standing Committee of the Political Bureau of the Central Committee. This established Comrade Mao Zedong's leadership position in the Red Army and the Party Central Committee, saving the Party, the Red Army, and the Chinese revolution, becoming a turning point of life and death in the history of the Party.

On July 7, 1937, the Marco Polo Bridge Incident occurred, after which Japanese imperialism launched a full-scale war of aggression against China, and the Chinese people began a nationwide war of resistance.

The Seventh National Congress was held in Yan'an in 1945. The congress established Mao Zedong Thought as the guiding ideology of the entire Party, which was the historical contribution of the Seventh National Congress. The congress summarized the fine traditions and styles formed by the Party in its long struggle into three major styles: integrating theory with practice, maintaining close ties with the masses, and criticism and self-criticism.

The Eighth National Congress of the Party : A good start in exploring the path to socialist construction

The Eighth National Congress was held in 1956. The Eighth National Congress was a good start in exploring China's own path to socialist construction. The congress correctly analyzed the changes in the domestic and international situations and the main contradictions at home, and the main task of the Party and the people at that time was to concentrate their efforts on resolving this contradiction and transforming our country from a backward agricultural country into an advanced industrial country as quickly as possible.

The Ninth National Congress of the Party : The congress during the Cultural Revolution

The Ninth National Congress was held in 1969. The Ninth National Congress upheld the "theory of continuing the revolution under the dictatorship of the proletariat," which legalized the theory and practice of the Cultural Revolution that began in 1966. Its guiding principles in ideology, politics, and organization were all wrong.

The Tenth National Congress of the Party : The congress during the Cultural Revolution

The Tenth National Congress of the Party was held in 1973, continuing the "leftist" errors of the Ninth National Congress.

The Eleventh National Congress of the Party : The first congress after the Cultural Revolution

The comprehensive rectification work in 1975 was presided over by Deng Xiaoping.

The Eleventh National Congress of the Party was held in 1977. Although it declared that the "Cultural Revolution" was over, it still affirmed the erroneous theories and practices of the "Cultural Revolution." It was not until the Third Plenary Session of the Eleventh Central Committee of the Party in 1978 that the focus of the Party's and the state's work shifted to modernization construction, thus achieving a great turning point of far-reaching significance in the history of the Party and the state since the founding of New China.

The Twelfth National Congress of the Party : Opening up a new situation for socialist modernization construction

In March 1979, Comrade Deng Xiaoping delivered an important speech entitled "Upholding the Four Cardinal Principles" at the Central Committee's work conference on theoretical work.

The Twelfth National Congress was held in 1982. At this congress, Deng Xiaoping first put forward the brand-new proposition of "building socialism with Chinese characteristics." He clearly pointed out: "Combining the universal truth of Marxism with the concrete reality of our country, following our own path, and building socialism with Chinese characteristics—this is the basic conclusion we have drawn from summarizing our long historical experience."

The Thirteenth National Congress of the Party : Expounding the theory of the primary stage of socialism

The 13th National Congress of the Communist Party of China (CPC) was held in 1987. The congress systematically expounded the theory of the primary stage of socialism for the first time and clearly summarized the Party's basic line during the primary stage of socialism. The congress pointed out that China's primary stage of socialism specifically refers to the specific stage that China must go through in building socialism under the conditions of backward productivity and underdeveloped commodity economy.

"Science and technology are the primary productive force" is both an important characteristic of the development of modern science and technology and the inevitable result of its development. Social productivity is people's ability to transform nature.

The 14th National Congress of the CPC : Established the guiding position of Deng Xiaoping's theory of building socialism with Chinese characteristics in the entire Party; clarified that the goal of economic system reform is to establish a socialist market economic system.

After Deng Xiaoping's Southern Tour speech in early 1992, the 14th National Congress was held in October, and three decisions of far-reaching significance were put forward at the congress:

First, to establish the guiding position of Deng Xiaoping's theory of building socialism with Chinese characteristics throughout the Party; second, to clarify that the goal of economic system reform is to establish a socialist market economic system; third, to require the whole Party to seize opportunities, accelerate development, and concentrate its efforts on economic construction.

The 15th National Congress of the CPC : Holding high the great banner of Deng Xiaoping Theory

The 15th National Congress of the CPC was held in 1997. In the Party Constitution adopted at the congress, Deng Xiaoping Theory was included along with Marxism-Leninism and Mao Zedong Thought as the guiding ideology of the Communist Party of China. The Communist Party of China will hold high the great banner of Deng Xiaoping Theory and comprehensively advance the cause of building socialism with Chinese characteristics into the 21st century.

The 16th National Congress of the CPC : A Congress of Keeping Pace with the Times

The 16th National Congress of the CPC was held in 2002. The theme of the congress was: Holding high the great banner of Deng Xiaoping Theory, fully implementing the important thought of "Three Represents," carrying forward the past and advancing with the times, comprehensively building a well-off society, accelerating the advance of socialist modernization, and striving to create a new situation for the cause of socialism with Chinese characteristics.

The 17th National Congress of the CPC : A Congress of Scientific Development and Harmonious Construction

The 17th National Congress of the CPC was held in 2007. The theme of the 17th National Congress of the CPC was: "Holding high the great banner of socialism with Chinese characteristics, guided by Deng Xiaoping Theory and the important thought of "Three Represents," thoroughly implementing the scientific outlook on development, continuing to emancipate the mind, adhering to reform and opening up, promoting scientific development, promoting social harmony, and striving for a new victory in comprehensively building a well-off society."

The 18th National Congress of the CPC : The great banner of socialism with Chinese characteristics, guided by Deng Xiaoping Theory and the important thought of "Three Represents," thoroughly implementing the scientific outlook on development, carefully summarizing the work of the past five years and the practice since the 16th National Congress of the CPC, and reviewing and summarizing the historical process and valuable experience of the Party in uniting and leading the people of all ethnic groups in the country to uphold and develop socialism with Chinese characteristics.

The 19th National Congress of the CPC : The 19th National Congress of the CPC was held in 2017. The theme of the 19th National Congress: Remaining true to our original aspiration and keeping our mission firmly in mind, holding high the great banner of socialism with Chinese characteristics, winning a decisive victory in building a moderately prosperous society in all respects, achieving a great victory in the new era of socialism with Chinese characteristics, and striving for the realization of the Chinese Dream of great national rejuvenation.