To realize great dreams, we must carry out great struggles; To realize great dreams, we must build great projects; To realize the great dream, we must promote the great cause, great struggle, great project, great cause and great dream, which are closely related, interrelated and interacted, among which the new great project of party building plays a decisive role. Building a great project should be carried out in combination with the practice of great struggle, great cause and great dream, so as to ensure that the Party is always in the forefront of the times in the historical process of profound changes in the world situation, the backbone of the people of the whole country in the historical process of coping with various tests at home and abroad, and the strong leadership core in the historical process of upholding and developing Socialism with Chinese characteristics.