April 1—24, 1969: The 9th National Congress of the CPC Central Committee is held

April 1, 1948: Mao Zedong speaks at the Jinsui cadres meeting in Caijiaya village in Xing county in Shanxi province, summing up the experiences of land reform and rectifying the Party and describing the general policy of the CPC

April 1—24, 1969: The Ninth National Congress of the CPC Central Committee is held in Beijing

Lin Biao made a political report to the congress which confirmed the error theory and practice of the "cultural revolution" and enhanced the status in the CPC Central Committee of Lin Biao and Jiang Qing.

April 1, 1983: The CPC Central Committee and State Council approve the "summary of discussions on accelerating the development and construction of Hainan Island"

April 1, 1983: The State Council promulgates the "provisional regulation on State-owned industrial enterprises", deciding to implement the system of manager responsibility and employee congress under the leadership of the Party Committee