December 4, 2021 is the Eighth National Constitutional day. The Hong Kong SAR government and the Hong Kong Central Committee Liaison Office jointly organized an online symposium on the theme of "constitution and 'one country, two systems' on the 4th to explore the relationship between the Constitution and" one country, two systems "and how Hong Kong can better implement" one country, two systems "within the constitutional framework. The chief executive of the Hong Kong Special Administrative Region, Mrs Carrie Lam, and Luo Huining, director of the Hong Kong Liaison Office, delivered speeches respectively. Zhang Yong, deputy director of the Legislative Affairs Committee of the Standing Committee of the National People's Congress and deputy director of the Hong Kong Basic Law Committee, delivered keynote speeches. Mrs Lam said that Hong Kong's continued prosperity and stability after its return to the motherland depended on the successful implementation of the "one country, two systems" policy. Hong Kong must deepen the correct understanding of the Constitution and Hong Kong's basic law by all sectors of society, especially the younger generation, and spare no effort to maintain Hong Kong's constitutional order under "one country, two systems". The constitution is the legislative basis and source of effectiveness of the Hong Kong Basic Law. Together with the Hong Kong Basic Law, it constitutes the constitutional basis of the Hong Kong Special Administrative Region and provides the most powerful guarantee for the long-term prosperity and stability of Hong Kong. All Hong Kong citizens have the responsibility to respect and safeguard the constitutional order with the Constitution and the basic law of Hong Kong as the core. Luo Huining said that the Constitution establishes the foundation of the "one country, two systems" system, ensures the stable and far-reaching practice of "one country, two systems", leads the cause of "one country, two systems" to keep pace with the times, does not recognize the supreme status of the Constitution in the Hong Kong Special Administrative Region and does not respect the leadership of the Communist Party of China, is to forget how the Hong Kong Special Administrative Region came from, in fact, it is to deny "one country, two systems" The constitutional foundation of. He pointed out that it is necessary to improve the systems and mechanisms of the special administrative regions related to the implementation of the Constitution and the basic law, improve the system for the central government to exercise comprehensive governance over the special administrative regions in accordance with the Constitution and the basic law, further implement the legal system and implementation mechanism for the special administrative regions to safeguard national security, and improve the system for the chief executive of the special administrative regions to be responsible to the central government, We will improve the mechanism for Hong Kong's integration into the overall situation of national development, complementary advantages and coordinated development with the mainland. Zhang Yong said that there are many aspects of the systems and principles established by the constitution. Specific to the practice of "one country, two systems", we need to focus on five aspects: first, adhere to the status of the fundamental law of the Constitution and further improve the system of "one country, two systems". Second, adhere to the principle of unitary system, which is not only the basic principle of safeguarding national unity, but also the basic criterion for dealing with the relationship between central and local power. Only by deeply understanding and earnestly following this principle can we promote the organic combination of the central comprehensive governance power and the high degree of autonomy of the Special Administrative Region. Third, adhere to the people's Congress system and provide more powerful constitutional support and guarantee for "one country, two systems". Fourth, adhere to the rule of law and the constitution, continue to strictly abide by the provisions of the Constitution and the basic law, and promote the development of the cause of "one country, two systems" on the track of the rule of law. Fifth, adhere to constitutional supervision to ensure that the newly constructed system and mechanism comply with the relevant provisions of the Constitution and the basic law. After the keynote speech, relevant guests had a conversation, continued to carry out constitutional publicity and education, enhanced social constitutional awareness and carried forward the constitutional spirit. This online symposium is also the fifth year that Hong Kong has held a symposium on "National Constitution Day". It is jointly organized by the Hong Kong SAR government and the Hong Kong Central Committee Liaison Office, and co organized by the Lijin Education Center. (outlook new era)