June 2025 marks the 120th anniversary of Comrade Chen Yun's birth. Comrade Zhu Jiamu served as Chen Yun's secretary in 1982 and has since written numerous articles recalling and analyzing Chen Yun's life, deeds, and thoughts. This book is the author's third monograph dedicated to Chen Yun. It primarily draws on the latest research findings regarding Comrade Chen Yun in recent years, supplemented by relevant representative works formally published in the past. Drawing closely from personal experiences with Party history and national history, the book focuses on Comrade Chen Yun's thoughts, work style, and contributions. It summarizes his charm through dimensions such as Party conduct, discipline, academic approach, literary style, calligraphy, family traditions, and research practices. The book also includes an appendix on A Profound Understanding of the Three Key Viewpoints in General Secretary Xi Jinping’s Speech at the 110th Anniversary of Comrade Chen Yun's Birth and presents the author’s heartfelt advocacy for using Chen Yun's research to contribute to the prosperity and development of the new era.