"Commemorating the 25th anniversary of the implementation of the basic law of Hong Kong: Academic Seminar on review and Prospect of theoretical research on the basic law" was held online on the 18th. More than 160 experts and scholars from relevant departments in the mainland, Hong Kong and Macao, universities and academic organizations gathered in the cloud for in-depth exchanges. We will help the cause of "one country, two systems" to be resolute in the face of challenges and find ways to resolve contradictions, so as to constantly move towards new success. In his speech, Deng Zhonghua, President of the National Association for Hong Kong and Macao Studies, pointed out that the study of the basic law should pay attention to the characteristics of the times, especially the characteristics that Hong Kong is in a critical stage of governance and prosperity after the major transition from chaos to governance. "One country, two systems" and basic law research in the new era must adhere to self-confidence in system and theory, and "summarize history, face the future and serve practice". Qiaoxiaoyang, former chairman of the Law Committee of the National People's Congress and the Hong Kong and Macao Basic Law Committee of the Standing Committee of the National People's Congress, chenzuoer, former executive deputy director of the Hong Kong and Macao Affairs Office of the State Council, fanxulitai, former chairman of the Legislative Council of the Hong Kong Special Administrative Region, yangyunzhong, Professor of the "one country, two systems" research center of the Macao Polytechnic, raogeping, Professor of the Law School of Peking University, and chenhongyi, Professor of the Law School of the University of Hong Kong, delivered keynote speeches. The participants also held discussions on such topics as "the formation and development of the 'one country, two systems' policy", "the interpretation of the basic law in the framework of the relationship between the central government and the HKSAR", "the constitutional order of the HKSAR" and "the review and Prospect of the construction of the Guangdong Hong Kong Macao Great Bay Area". Han Dayuan, director of the Legal Research Institute of "one country, two systems" at Renmin University of China, pointed out in his speech at the closing ceremony that "one country, two systems" is an institutional innovation. At the important juncture of the 25th anniversary of the implementation of the basic law of Hong Kong, we should objectively look at the problems encountered, constantly reflect on them, and continue to contribute to the theoretical innovation of "one country, two systems" in the future. The event was hosted by the "one country, two systems" Law Research Institute of Renmin University of China, the Hong Kong, Macao and Taiwan Office of Renmin University of China, the Law School of Renmin University of China and the public law research center of Renmin University of China, and undertaken by xuchongde constitutional development fund. (reporter chenxiaoyuan, lihanxue) (outlook new era)