At a ceremony marking the 100th anniversary of the founding of the CPC, President Xi Jinping put forward and summarized the great founding spirit of the Party for the first time, that is, "upholding truth and ideals, staying true to our original aspiration and founding mission, fighting bravely without fear of sacrifice, and remaining loyal to the Party and faithful to the people". The great founding spirit of the Party is conceived in the great struggle of the CPC to seek happiness for the people and rejuvenation for the nation. It originates from the great practice of China's revolution, construction and reform in various periods. Also, it embodies the ideal pursuit, original mission and political character of the CPC, which is the latest summary and refinement of the origin of spiritual pedigree of the Communists, and the spiritual origin and ideological basis for the CPC to establish, revitalize and strengthen. The great founding spirit of the Party contains rich connotations, which are manifested in the truth-seeking spirit of "upholding truth and ideals", the practice spirit of "staying true to our original aspiration and founding mission", the fighting spirit of "fighting bravely without fear of sacrifice", and the selfless spirit of "remaining loyal to the Party and faithful to the people". The great founding spirit of the Party has distinctive characteristics such as advanced, practical, revolutionary and political. It shows continuous advancement in pursuing the truth and upholding the ideals; it reflects distinctive practicality during its emergence and development in practice; it manifests completely revolutionary character during its birth, development and strengthening in struggles; it demonstrates prominent political nature in speaking about politics clearly, and remaining loyal to the Party and faithful to the people. The great founding spirit of the Party possesses significant value of the times, which is the spiritual weapon of educating people in the new era, the spiritual source of strengthening the Party and the spiritual power of a powerful country. In the new development stage of pursuing national rejuvenation in a world that is undergoing momentous changes of a kind not seen in a century, the great founding spirit of the Party has created the truth of the theory and ideal, the goodness of the original aspiration and founding mission, and the beauty of character and virtue of the Chinese Communists. It is the spiritual weapon for educating people in the new era. The great founding spirit of the Party makes the CPC always advanced and pure, never deteriorate, never change color or taste, which is the spiritual source of strengthening the Party. The great founding spirit of the Party provides spiritual support for saving, revitalizing and enriching the country, which is the spiritual motivation of a powerful country. To carry forward the great founding spirit of the Party in the new era, we should take "upholding truth and ideals" as the bedrock to strengthen our ideals and beliefs cognitively, take "remaining loyal to the Party and faithful to the people" as the connection point to promote love for the Party and the people emotionally, take "fighting bravely without fear of sacrifice" as the focus to define character, take "staying true to our original aspiration and founding mission" as the foothold to strengthen the undertaking of mission in action. Knowledge, emotion, will and action work together to truly realize the internalization and externalization of the great founding spirit of the Party.