1939年4月4日,陕甘宁边区颁布《土地条例》。
April 4, 1939, The Shaanxi-Gansu-Ningxia Border Region promulgated the Land Regulations.
1974年4月4日,邓小平率团出席联大第六届特别会议。
April 4, 1974, Deng Xiaoping led a delegation to attend the Sixth Special Session of the UN General Assembly.
1990年4月4日,香港特别行政区基本法公布。
April 4, 1990, The Basic Law of the Hong Kong Special Administrative Region was promulgated .