Mao Zedong in the context of "Changsha"

A dictator is a political leader who possesses absolute power. A dictatorship is defined as a state ruled by a dictator. The word originated as the title of a Roman dictator elected by the Roman Senate to rule the republic in times of emergency. Like the terms "tyrant" and "autocrat", dictator came to be used almost exclusively as a non-titular term for oppressive rule. In modern usage, the term dictator is generally used to describe a leader who holds or abuses an extraordinary amount of personal power.

Dictatorships are often characterised by some of the following: suspension of elections and civil liberties; proclamation of a state of emergency; rule by decree; repression of political opponents; not abiding by the procedures of the rule of law; and the existence of a cult of personality centered on the leader. Dictatorships are often one-party or dominant-party states. A wide variety of leaders coming to power in different kinds of regimes, such as one-party or dominant-party states and civilian governments under a personal rule, have been described as dictators.

The Second Sino-Japanese War was fought between the Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931. It is considered part of World War II, and often regarded as the beginning of World War II in Asia. It was the largest Asian war in the 20th century. It is known in China as the War of Resistance Against Japanese Aggression.

On 18 September 1931, the Japanese staged the Mukden incident, a false flag event fabricated to justify their invasion of Manchuria and establishment of the puppet state of Manchukuo. This is sometimes marked as the beginning of the war. From 1931 to 1937, China and Japan engaged in skirmishes, including in Shanghai and in Northern China. Nationalist and Chinese Communist Party (CCP) forces, respectively led by Chiang Kai-shek and Mao Zedong, had fought each other in the Chinese Civil War since 1927. In late 1933, Chiang Kai-shek encircled the Chinese Communists in an attempt to finally destroy them, forcing the Communists into the Long March, resulting in the Communists losing around 90% of their men. As a Japanese invasion became imminent, Chiang still refused to form a united front before he was placed under house arrest by his subordinates who forced him to form the Second United Front in late 1936 in order to resist the Japanese invasion together.

The Communist Party of China (CPC), commonly known as the Chinese Communist Party (CCP), is the founding and ruling party of the People's Republic of China (PRC). Founded in 1921, the CCP won the Chinese Civil War against the Kuomintang and proclaimed the establishment of the PRC under the chairmanship of Mao Zedong in October 1949. The CCP has since governed China and has had sole control over the country's armed forces and law enforcement. As of 2024, the CCP has more than 100 million members, making it the second largest political party by membership in the world.

In 1921, Chen Duxiu and Li Dazhao founded the CCP with the help of the Far Eastern Bureau of the Russian Communist Party (Bolsheviks) and Far Eastern Bureau of the Communist International. Although the CCP aligned with the Kuomintang (KMT) during its initial years, the rise of the KMT's right-wing under the leadership of Chiang Kai-shek and subsequent massacres of tens of thousands of CCP members resulted in a split and a prolonged civil war between the CCP and KMT. During the next ten years of guerrilla warfare, Mao Zedong rose to become the most influential figure in the CCP and the party established a strong base among the rural peasantry with its land reform policies. Support for the CCP continued to grow throughout the Second Sino-Japanese War. After the Japanese surrender in 1945, the CCP emerged triumphant in the communist revolution against the Nationalist government. The CCP established the People's Republic of China on 1 October 1949 and the remnants of the Nationalist government retreated to Taiwan shortly after.

Following their defeat in the Chinese Civil War, the remnants of the Nationalist government of the Republic of China (ROC), alongside many refugees, retreated to the island of Taiwan (Formosa) beginning on December 7, 1949. The exodus is sometimes called the Great Retreat (Chinese: 大撤退) in Taiwan. The Nationalist Kuomintang party (KMT), its officers, and approximately 2 million ROC troops took part in the retreat, in addition to many civilians and refugees, fleeing the advance of the People's Liberation Army (PLA) of the Chinese Communist Party (CCP). The CCP, who now effectively controlled most of mainland China, spent the subsequent years purging any remnant Nationalist agents in western and southern China, solidifying the rule of the newly established People's Republic of China (PRC).

ROC troops mostly fled to Taiwan from provinces in southern China, in particular Sichuan Province, where the last stand of the ROC's main army took place. The flight to Taiwan took place over four months after Mao Zedong had proclaimed the founding of the PRC in Beijing on October 1, 1949. The island of Taiwan remained part of Japan during the occupation until Japan severed its territorial claims in the Treaty of San Francisco, which came into effect in 1952. In addition, some of the ROC troops in Yunnan also fled to Burma, where the insurgency lasted until 1961.

The general secretary of the Central Committee of the Chinese Communist Party (Chinese: 中国共产党中央委员会总书记; pinyin: Zhōngguó Gòngchǎndǎng Zhōngyāng Wěiyuánhuì Zǒngshūjì) is the leader of the Chinese Communist Party (CCP), the sole ruling party of the People's Republic of China (PRC). The general secretary leads the CCP Central Committee. Since 1989, the CCP general secretary has been the paramount leader of the PRC.

The position of the general secretary of the Central Committee was established at the 4th Party National Congress in 1925, when Chen Duxiu, one of the founders of the CCP, was elected as the first General Secretary. After the 7th National Congress, the position was replaced by the Chairman of the Central Committee, which was held by Mao Zedong until his death in 1976. The post was re-established at the 12th National Congress in 1982 and replaced the Party Chairman as the highest leadership position of the CCP; Hu Yaobang was the first General Secretary. Since Jiang Zemin's leadership in the 1990s, the holder of the post has been, except for transitional periods, the president of China, making the holder the state representative, and the chairman of the Central Military Commission (CMC), the supreme commander of the People's Liberation Army (PLA).

The Sino-Soviet split was the gradual worsening of relations between China and the Union of Soviet Socialist Republics (USSR) during the Cold War. This was primarily caused by divergences that arose from their different interpretations and practical applications of Marxism–Leninism, as influenced by their respective geopolitics during the Cold War of 1947–1991. In the late 1950s and early 1960s, Sino-Soviet debates about the interpretation of orthodox Marxism became specific disputes about the Soviet Union's policies of national de-Stalinization and international peaceful coexistence with the Western Bloc, which Chinese leader Mao Zedong decried as revisionism. Against that ideological background, China took a belligerent stance towards the Western world, and publicly rejected the Soviet Union's policy of peaceful coexistence between the Western Bloc and Eastern Bloc. In addition, Beijing resented the Soviet Union's growing ties with India due to factors such as the Sino-Indian border dispute, while Moscow feared that Mao was unconcerned about the drastic consequences of nuclear warfare.

In 1956, Soviet leader Nikita Khrushchev denounced Joseph Stalin and Stalinism in the speech "On the Cult of Personality and Its Consequences" and began the de-Stalinization of the USSR. Mao and the Chinese leadership were appalled as the PRC and the USSR progressively diverged in their interpretations and applications of Leninist theory. By 1961, their intractable ideological differences provoked the PRC's formal denunciation of Soviet communism as the work of "revisionist traitors" in the USSR. The PRC also declared the Soviet Union social imperialist. For Eastern Bloc countries, the Sino-Soviet split was a question of who would lead the revolution for world communism, and to whom (China or the USSR) the vanguard parties of the world would turn for political advice, financial aid, and military assistance. In that vein, both countries competed for the leadership of world communism through the vanguard parties native to the countries in their spheres of influence. The conflict culminated after the Zhenbao Island Incident in 1969, when the Soviet Union reportedly considered the possibility of launching a large-scale nuclear strike against China, and the Chinese leadership, including Mao, was evacuated from Beijing, before both sides eventually returned to diplomatic negotiations.

Traditional Chinese medicine (TCM) is an alternative medical practice drawn from traditional medicine in China. A large share of its claims are pseudoscientific, with the majority of treatments having no robust evidence of effectiveness or logical mechanism of action. Some TCM ingredients are known to be toxic and cause disease, including cancer.

Medicine in traditional China encompassed a range of sometimes competing health and healing practices, folk beliefs, literati theory, Taoist and Confucian philosophy, herbal remedies, food, diet, exercise, medical specializations, and schools of thought. TCM as it exists today has been described as a largely 20th century invention. In the early twentieth century, Chinese cultural and political modernizers worked to eliminate traditional practices as backward and unscientific. Traditional practitioners then selected elements of philosophy and practice and organized them into what they called "Chinese medicine". In the 1950s, the Chinese government sought to revive traditional medicine (including legalizing previously banned practices) and sponsored the integration of TCM and Western medicine, and in the Cultural Revolution of the 1960s, promoted TCM as inexpensive and popular. The creation of modern TCM was largely spearheaded by Mao Zedong, despite the fact that, according to The Private Life of Chairman Mao, he did not believe in its effectiveness. After the opening of relations between the United States and China after 1972, there was great interest in the West for what is now called traditional Chinese medicine (TCM).

The Cambodian genocide was the systematic persecution and killing of Cambodian citizens by the Khmer Rouge under the general secretaryship of Pol Pot. It resulted in the deaths of 1.5 to 2 million people from 1975 to 1979, nearly 25% of Cambodia's population in 1975 (c. 7.8 million).

Pol Pot and the Khmer Rouge were supported for many years by the Chinese Communist Party (CCP), led by Chairman Mao Zedong; it is estimated that at least 90% of the foreign aid which the Khmer Rouge received came from China, including at least US$1 billion in interest-free economic and military aid in 1975 alone. After it seized power in April 1975, the Khmer Rouge wanted to turn the country into an agrarian socialist republic, founded on the policies of ultra-Maoism and influenced by the Cultural Revolution. Pol Pot and other Khmer Rouge officials met with Mao in Beijing in June 1975, receiving approval and advice, while high-ranking CCP officials such as Politburo Standing Committee member Zhang Chunqiao later visited Cambodia to offer help. To fulfill its goals, the Khmer Rouge emptied the cities and marched Cambodians to labor camps in the countryside, where mass executions, forced labor, physical abuse, torture, malnutrition, and disease were rampant. In 1976, the Khmer Rouge renamed the country Democratic Kampuchea.