Mao Zedong proclaimed the establishment of the People’s Republic of China (PRC) in Beijing’s Tiananmen Square, marking the Communist Party’s national victory after the civil war on the mainland and the start of a new one-party state.
The PRC and the USSR signed the Treaty of Friendship, Alliance and Mutual Assistance, anchoring China’s early Cold War security and economic relationship with the Soviet bloc.
At the first session of the First National People’s Congress, the PRC adopted and enacted its first full constitution, replacing the 1949 “Common Program” that had served as a provisional constitutional framework.
Mao Zedong launched the Great Leap Forward, promoting people’s communes and rapid industrialization (including backyard furnaces). The campaign’s disruptions to agriculture and governance contributed to severe famine and economic crisis.
The CCP issued the May 16 Notification, widely treated as the key political declaration that began the Cultural Revolution, setting off a decade of radical political struggle, purges, and upheaval.
The UN General Assembly adopted Resolution 2758, recognizing the PRC as “the only legitimate representative of China” to the United Nations and removing the representatives of Chiang Kai-shek.
The United States and the PRC issued the Shanghai Communiqué, a foundational document for the normalization process that reshaped East Asian geopolitics and U.S.–China relations.
Japan and the PRC signed the Japan–China Joint Communiqué, establishing diplomatic relations and ending Japan’s official relations with the Republic of China (Taiwan).
In December 1978, the CCP’s Third Plenum of the 11th Central Committee marked a major strategic shift toward economic modernization and reform, associated with the onset of “reform and opening up.”
The Fifth National People’s Congress adopted the 1982 Constitution, establishing the core constitutional framework that remains in force (with subsequent amendments) and reflecting the reform-era institutional reset.
China and the United Kingdom signed the Sino-British Joint Declaration outlining the terms for Hong Kong’s return to Chinese sovereignty in 1997 and the “one country, two systems” framework.
After weeks of mass demonstrations centered in Beijing, authorities used military force on June 3–4, 1989 to clear Tiananmen Square and surrounding areas, followed by widespread arrests and political tightening.
Hong Kong was transferred from British rule to Chinese sovereignty and became the Hong Kong Special Administrative Region (HKSAR), implementing “one country, two systems” as set out in the Joint Declaration.
China became a member of the World Trade Organization (WTO), deepening integration into global trade rules and accelerating export-led growth and domestic market reforms.
The National People’s Congress adopted the Anti-Secession Law, codifying opposition to Taiwan independence and authorizing “non-peaceful means” under specified conditions, shaping cross-strait policy signaling.
Xi Jinping was elected General Secretary of the Chinese Communist Party, beginning the leadership era commonly associated with centralization of authority, intensified party discipline, and major policy initiatives at home and abroad.
Beijing enacted the Hong Kong national security law, criminalizing secession, subversion, terrorism, and “collusion with foreign forces,” significantly reshaping Hong Kong’s legal and political environment.
People's Republic of China (1949–present)
