Group 1 - The concept of the "fifth facade" refers to the rooftops of buildings, which significantly influence the overall urban landscape from a bird's-eye view [1] - More than 30 rooftop terraces along Beijing's central axis were opened to the public this summer, allowing citizens and tourists to enjoy various activities, enhancing urban vibrancy [1] - The shift in urban development from large-scale expansion to improving existing spaces highlights the potential of underutilized rooftop areas, particularly in cities like Shenzhen, which has approximately 200 million square meters of rooftop space available for development [1] Group 2 - The "fifth facade" can integrate good ecological environments into urban settings, as seen in Wuhan's commercial spaces that transformed rooftops into gardens, attracting visitors [2] - In Guangzhou, the Baiyun International Conference Center installed around 40,000 square meters of photovoltaic panels on its rooftop, generating over 4 million kilowatt-hours of electricity in the past three years and reducing carbon emissions by over 3,000 tons [2] - Rooftops are evolving from mere building covers to vibrant spaces that foster community engagement and cater to diverse consumer needs, enhancing the livability of urban areas [2] Group 3 - The well-planned "fifth facade" offers aesthetic, cultural, lifestyle, and economic value, making it a valuable asset for cities that require scientific planning and meticulous regulation [3] - Cities like Wenzhou are strategically zoning rooftop areas into distinct categories to avoid a one-size-fits-all approach, ensuring targeted development [3] - The central urban work conference emphasizes the importance of creating comfortable and convenient livable cities, with the "fifth facade" contributing to urban vitality through improved design and management [3]