The writing of history often opens new chapters in the midst of change. Since the Third Plenary Session of the Eleventh Central Committee of the Communist Party of China, with 45 years of hard work and the surging tide of reform and opening up, socialist China has achieved a great leap from "catching up with the times" to "leading the times". Since the Third Plenary Session of the 18th Central Committee of the Communist Party of China, our party has overcome difficulties for 10 years. With tremendous political courage, we have comprehensively deepened reforms, achieved historic changes, systematic reshaping, and overall reconstruction in many fields, and created a new situation of reform and opening up with unprecedented strength. The wind, rain, and vicissitudes make the road boundless. Practice has shown us that reform and opening up is a necessary path for the development and progress of contemporary China, and a necessary path for realizing the Chinese Dream. On the new journey of building a strong country and national rejuvenation, we will carry out reform and opening up to the end - this is the call of the times, the voice of the people, the unswerving strategic layout of the CPC Central Committee, and the mission and responsibility of the CPC in the new era. （1） Economic system reform is constantly improving, political system reform is steadily advancing, cultural system reform is innovating and developing, social system reform is comprehensively advancing, ecological civilization system reform is accelerating, party building system reform is solidly advancing, disciplinary inspection system reform has achieved important phased results, national defense and military reform has achieved historic breakthroughs... Time is a faithful recorder. The Third Plenary Session of the 18th Central Committee of the Communist Party of China sounded the horn of comprehensive deepening of reform, ushering in a new era of comprehensive deepening of reform and systematic design to promote reform. In the past 10 years, the reform has been comprehensive, profound and fundamental, and the achievements made have been historic, revolutionary and groundbreaking. The basic institutional framework in various fields has been basically established, the socialist system with Chinese characteristics has become more mature and stereotyped, and the modernization level of the national governance system and governance capability has been significantly improved, which has written a significant chapter in the broad process of Chinese path to modernization. Looking back, one can better understand the true meaning of "historic change". This is a profound transformation of ideological theory. Science has answered a series of major theoretical and practical questions, such as why we need to comprehensively deepen reforms in the new era and how to do so. This is a profound transformation in the reform of organizational methods. The Party continuously strengthens its centralized and unified leadership in comprehensively deepening reforms, and plans to advance reforms with a global perspective and systematic thinking. From consolidating foundations, pillars, and beams, to comprehensively advancing and accumulating momentum, and then to strengthening system integration, collaborative efficiency, and effectively and orderly solving institutional obstacles, institutional obstacles, and policy innovation problems in various fields,