【明報專訊】THE PLANNING of the Guangdong-Hong Kong-Macao Greater Bay Area is now in full swing. However, government officials and various social sectors in the three regions have diverse opinions on how to smoothen the flow of people, goods and capital, and there is not a consensus yet. Wang Rong, Chairman of Guangdong People's Political Consultative Conference, thinks that a "coordination mechanism" has to be established at the national level to handle problems that may come up in the course of the plan's implementation. The construction of the Greater Bay Area is a national policy and is advantageous to Hong Kong's long-term development. However, it is not easy to bring about the integration of the Greater Bay Area while maintaining the boundaries of "one country, two systems". How to resolve these differences will be a major challenge for the central government as well as for Hong Kong.