1936年4月9日，张学良与周恩来密谈合作抗日。
April 9, 1936, Zhang Xueliang and Zhou Enlai held secret talks on the cooperation of resisting Japanese aggression.
1991年4月9日，中国制定国民经济十年规划和八·五计划。
April 9, 1991, China formulated the Ten-Year Plan for National Economic and Social Development, and the Outline of the 8th Five-Year Plan.
