To govern a country, we must first govern the Party, and only when the Party is prosperous can the country be strong. Our party is the world's largest political party established under the guidance of Marxist theory of party building and in accordance with the principle of democratic centralism. It has been in power for a long time in the country with the largest population in the world, with a long history, a large number of people, and a large scale. It not only has the huge advantage of doing great things and building great achievements, but also faces special difficulties in governing the party and the country. Keeping sober and firm in solving the unique problems of the big party is an inevitable requirement to ensure that our party always maintains its progressiveness and purity, to ensure that our party can withstand the test of long-term governance and various risk challenges, and to ensure that our party can pool a broader range of efforts and lead the Chinese people to realize the Chinese dream of the great rejuvenation of the Chinese nation. Solving the above difficulties is a hurdle that the Party must overcome in order to achieve its mission and tasks in the new era and new journey. It is also a hard nut to crack to comprehensively and strictly govern the Party and adapt to the new situation and requirements. Solving the unique difficulties faced by a large party is inevitably a long-term and arduous process, which determines that comprehensive and strict governance of the party is always on the way, and the great self revolution of the party is always on the way. There must be no relaxation, fatigue, or war weariness. We must persistently promote comprehensive and strict governance of the party, deepen the new great project of party building in the new era, and lead social revolution with the party's self revolution. Currently, China is in a critical period of realizing the great rejuvenation of the Chinese nation. To comprehensively promote the great rejuvenation of the Chinese nation with Chinese path to modernization is an unprecedented pioneering undertaking. It is not easy to achieve and will inevitably encounter various risks and challenges.