1948年4月1日，毛泽东提出新民主主义革命总路线和总政策。
April 1, 1948，Mao Zedong put forward the general line and general policy of the New Democratic Revolution.
1983年4月1日，中共中央、国务院批转《加快海南岛开发建设问题讨论纪要》，中国加快开发海南。
April 1, 1983, the Central Committee of the Communist Party of China and the State Council approved the Minutes of Discussion on Speeding Up the Development and Construction of Hainan Island and decided to speed up the development of Hainan.
1985年4月1日，《中华人民共和国专利法》实施。
April 1, 1985, Patent Law of the People's Republic of China was implemented.
