全面深刻地阐释党的第三个历史决议的核心要义、突出特点与重大意义，有助于系统准确把握其精髓要义、重点内容、目标意图。回答“中国共产党是什么、要干什么”这个根本问题、总结“过去我们为什么能够成功、未来我们怎样才能继续成功”的经验、领会“两个确立”的决定性意义是党的第三个历史决议所要阐释的核心要义；其突出特点主要体现在秉持实事求是和尊重历史的科学世界观方法论、聚焦党的百年奋斗重大成就和历史经验这一主题、突出中国特色社会主义新时代这个重点；党的第三个历史决议是在重大历史关头形成的，有利于增强历史认同和坚定开创未来的必胜信念、继续运用历史发展规律掌握历史主动、确保全党团结一致朝着第二个百年奋斗目标迈进。

A comprehensive and profound interpretation of the core essence, prominent features and great significance of the third historical resolution of the Communist Party of China (CPC) will help to grasp systematically and accurately its essence, key content, objectives and intentions, reply the fundamental question of “what is the CPC” and what is the CPC going to do”, summarize the experience of “why we were able to succeed in the past and how we shall continue to be successful in the future”, and understand that the decisive significance of the “two establishments” is the core essence of the third historical resolution of the CPC. Its distinctive features are mainly embodied in adhering to the scientific world outlook methodology of seeking truth from facts and respecting history, focusing on the theme of the CPC's major centennial achievements and historical experience, and highlighting the new era of socialism with Chinese characteristics. Formed at crucial historical moment，the third historical resolution of the CPC is conducive to strengthening historical identity and conviction of victory to open up the future, continuing to use the laws of historical development to grasp historical initiative, and ensuring that the whole party is united towards the second centennial goal.