Core Viewpoint - The article discusses the innovative approaches taken by Hangzhou's Qianjiang New City to retrofit old buildings for energy efficiency and carbon reduction, particularly in the context of the National Low Carbon Day [1][2]. Group 1: Low Carbon Building Management - The Qianjiang New City has developed a new management path for "low carbon buildings" by promoting smart lighting and introducing energy management systems, leading to significant energy savings and carbon reduction [1][2]. - The focus is on optimizing the management and retrofitting of older buildings, which were constructed around 2001-2002, to address their high energy consumption issues [2][3]. Group 2: Implementation of Standards - The district has drafted and published low carbon building standards to guide buildings in improving their low carbon operational management levels [2][7]. - The standards evaluate buildings based on energy recovery, clean energy use, and other metrics such as rooftop solar panels and rainwater recovery systems [7][8]. Group 3: Practical Examples and Benefits - Successful examples include the Taiping Financial Building, which reduced electricity consumption through time-zone lighting and installed solar panels that can recoup costs within five years [8]. - The initiative aims to create a win-win situation for businesses by reducing costs and contributing to societal energy savings and carbon reduction [8][9]. Group 4: Broader Community Impact - The low carbon building initiative is part of a larger effort to create a "low carbon community," which includes ecological experiences, economic model exploration, and environmental improvements [9]. - Activities such as ecological concerts and waste recycling initiatives are designed to foster a culture of low carbon living among residents and office workers [9].

Group 1: Urban Renewal and Low-Carbon Initiatives - The central government emphasizes the importance of urban renewal to create high-quality living spaces for residents, focusing on building good houses, communities, and neighborhoods [1] - The Thames Town community in Shanghai has initiated a low-carbon community pilot project, which includes public space renovations and low-carbon awareness campaigns [3][5] - By the end of 2024, the Thames Town community aims to reduce per capita carbon emission intensity by 10.82% compared to 2020, with a green coverage rate of 62% [5] Group 2: Community Engagement and Activities - The Thames Town community promotes low-carbon habits among residents through various activities, such as "barter" events and plant adoption, fostering neighborly relationships [3][4] - The community has implemented innovative features in its low-carbon park, including solar-powered fitness equipment and benches that serve as charging stations [4] Group 3: Rooftop Gardens and Shared Spaces - In Chengdu, the transformation of rooftop spaces into shared gardens has improved the community environment and provided recreational areas for residents [7][8] - The rooftop garden project encourages community involvement, with residents taking on volunteer roles for maintenance and care [8] Group 4: Upgrades in Agricultural Markets - Wuhan's Dacheng Fresh Market has undergone three rounds of upgrades to improve cleanliness and functionality, significantly enhancing the shopping experience for residents [10][12] - The latest upgrade includes the installation of a new ventilation system and smart screens displaying real-time product information, contributing to a more transparent and pleasant market environment [13]