The Hundred Flowers Campaign, also termed the Hundred Flowers Movement () and the Double Hundred Movement (), was a period from 1956 to 1957 in the People's Republic of China during which the Chinese Communist Party (CCP), led by Mao Zedong, proposed to "let one hundred flowers bloom in social science and arts and let one hundred points of view be expressed in the field of science." It was a campaign that allowed citizens to offer criticism and advice to the government and the party; hence it was intended to serve an antibureaucratic purpose, at least on the Maoists' part. The campaign resulted in a groundswell of criticism aimed at the Party and its policies by those outside its rank and represented a brief period of relaxation in ideological and cultural control.

The movement was in part a response to tensions between the CCP and Chinese intellectuals. Mao had realized that the CCP's control over intellectual life was stifling potentially useful new ideas. He was also worried about the emergence of new party elites who could threaten his position. The ideological crackdown re-imposed Maoist orthodoxy in public expression, and catalyzed the Anti-Rightist Movement.

The campaign

Naming

The name of the movement consists two parts. The first part, "Let a hundred flowers bloom," is from the novel Flowers in the Mirror by the Qing author Li Ruzhen; the second part, "Let a hundred schools of thought contend," comes from Treatise on Literature of the Book of Han authored by the Chinese historian Ban Gu:

The slogan was first used by Mao Zedong on May 2, 1956, during a public speech. The name was used to arouse the interest of China's intellectuals, referring to the Warring States period when numerous schools of thought competed for ideological, not military, supremacy. Historically, Confucianism, Chinese Buddhism and Taoism had gained prominence, and socialism would now face its test. At the time, the movement was opposed by even some of Mao's most devout followers, as well as some within the academic circle, most notably, Guo Moruo.

Launch (early 1956 – early 1957)

In March 1951, the Peking Opera Research Institute was considered to be expanded and established as the Chinese Opera Research Institute. Mao was invited to inscribe a dedication for the institute. Meanwhile, half of the people argued that Peking Opera is outdated and that revolutionary opera should be promoted. In late March, Mao inscribed a dedication for the establishment of the Chinese Opera Research Institute: "Let a hundred flowers bloom; weed through the old to bring forth the new." In 1953, Boda Chen, who was in charge of the Committee for the Study of Chinese Historical Issues, sought Mao's guidance on the work principles, to which Chairman Mao responded with four characters: "Let a hundred schools of thought contend." Until April 28, 1956, in his concluding speech at an expanded meeting of the Politburo of the Chinese Communist Party, he mentioned, "Let a hundred flowers bloom, let a hundred schools of thought contend" for the first time. It is suggested that the launching of the campaign was delayed by the shocking impact of the speech denouncing Stalin at the Twentieth Soviet Party Congress in February 1956 delivered by Nikita Khrushchev.

In the opening stage of the movement, during March and April, issues discussed were relatively minor and unimportant in the grand scheme. Emphasis was placed on a distinction being drawn between "friend and foe".

Criticisms became more specific in May, citing the regimentation of education, thought reforms in previous years that were described as "painful", and the lack of employment prospects for those who went to American and British scholars. Additionally, some recanted their self-criticism and confessions from previous years. The majority of these critiques argued that the Party had become less revolutionary and more bureaucratic. Workers argued that the wage system was irrational and complained about the requirement to work overtime without pay.