The 2025 Central Urban Work Conference proposed to "focus on building safe, reliable and resilient cities", and regard it as one of the key goals for building "innovative, livable, beautiful, resilient, civilized and intelligent modern people's cities". 2025 marks the fifth anniversary of the implementation of the integrated development strategy for the Yangtze River Delta. For the Yangtze River Delta metropolitan area, which shoulders a major national strategic mission, its resilient city construction provides a regional practice model for exploring new paths for modernization of Chinese characteristic cities. At present, the integrated development of the Yangtze River Delta is moving towards a deeper and higher quality new stage of urban agglomeration "multi circle coordination", urban agglomeration "spatial integration", and ecological security "joint protection and governance". The integration and high-quality development of the Yangtze River Delta region require us to go beyond the perspective of individual cities, apply systematic thinking and integration perspective, and work together to address the common challenges brought by climate change. This is not only an inevitable requirement for ecological environment protection and urban resilience and security construction, but also an important practice to practice the concept of "green mountains and clear waters are as valuable as mountains of gold and silver", achieve the protection of the Yangtze River, and promote the modernization of regional collaborative governance. Building a strong foundation for resilient cities requires cognitive collaboration. In the context of global climate change, cities are facing increasingly severe extreme weather and disaster risks, and traditional engineering disaster prevention models are unable to adapt to complex and intertwined risk challenges. Ecological disaster prevention and reduction, as a fusion path of nature based solutions and disaster risk reduction, emphasizes the systematic reduction of disaster risks and the enhancement of social ecological resilience through sustainable management, protection, and restoration of ecosystems. The Yangtze River Delta is densely covered with rivers and lakes, and the water system with the Taihu Lake Lake as the core constitutes a natural life community across administrative boundaries. In the process of rapid urbanization, inconsistent management standards and insufficient coordination among different regions have led to the fragmentation of ecological spaces and the accumulation of disaster risks in administrative boundaries, becoming a "depression" for regional security. Taking the the Taihu Lake Lake basin as an example, the rainfall in this region is concentrated, and the precipitation in flood season accounts for about 60% of the whole year. The superposition of plum rain and typhoon is easy to cause drainage flooding. At the same time, the rapid development of urbanization has profoundly changed the surface condition. Since 1997, the area of construction land in the the Taihu Lake Lake basin has increased by about 73%. The regulation of polder areas and the upgrading of waterways have further changed the conditions of runoff generation and concentration for reconstruction. These changes have led to a significant reduction in the convergence time of floods, faster and higher peak water levels, exacerbating the flood control pressure in downstream areas. From this, it can be seen that the land use pattern in the upstream directly affects the flood control safety in the downstream, and urban expansion also exacerbates the regional heat island effect, leading to the diversified, extreme, and compound development of climate risks in the Yangtze River Delta region. If various regions continue to sweep the snow at their doorstep in disaster prevention and reduction, not only will the governance efficiency be low, but it may also cause cross regional transmission and superposition of risks, ultimately weakening the resilience defense line of the entire Yangtze River Delta. Therefore, building a strong resilience barrier in the Yangtze River Delta region primarily relies on achieving an integrated understanding and promoting goal synergy. It must be deeply recognized that the ecological security and climate security of the Yangtze River Delta are a game of chess. Any ecological degradation or risk loss of control in any region may affect the entire region through natural processes such as water systems, atmospheric circulation, or economic and social connections. This requires us to deeply integrate the construction goals of the "Beautiful Yangtze River Delta" and the "Safe Yangtze River Delta", unify the goal of improving the overall quality of the regional ecosystem, maintaining ecological security in the lower reaches of the Yangtze River, and reducing overall disaster risks, and work together to address the complex climate risks in the Yangtze River Delta region. In pilot areas such as demonstration zones, it is even more important to take the ecological disaster prevention and mitigation capabilities, disaster risk mitigation and adaptation efficiency as important indicators to measure the level of integrated development, and achieve the coordinated integration of multiple goals of ecological protection, risk prevention and control, and high-quality development. To enhance the effectiveness of resilient cities, system optimization is the key, and achieving collaborative consensus is the first step. How to systematically integrate ecological concepts into the entire process of urban planning, engineering, construction, and management, and couple and optimize the "blue-green gray" infrastructure, in order to achieve the integration and efficiency improvement of "1+1gt; 2", is a more critical core issue. Firstly, we should strengthen the guidance of planning and the connection with standards, and do a good job in top-level design. Fully integrate the requirements of resilient cities and climate adaptability into national spatial planning and various related special plans, ensuring that the ecological security bottom line and the urban security bottom line are "dual line protected". Accelerate the improvement of technical standards related to resilient cities, such as comprehensive evaluation standards for urban resilience and safety, to provide scientific guidance for practice. At the same time, exploring the gradual inclusion of urban resilience and safety level, ecological disaster prevention and mitigation capabilities, etc. into the development evaluation system, and establishing a clear orientation of valuing long-term safety and advocating green development. Secondly, we must closely focus on the "system integration and spatial optimization" and promote urban ecological restoration. In urban construction and renewal, priority should be given to protecting and restoring natural water systems, wetlands, and vegetation, while maximizing the preservation of ecological background. Actively promoting the concept of "ecological disaster prevention and reduction", widely adopting ecological technologies such as permeable paving and rain gardens in the construction of communities, roads, parks, etc., to enhance the ability of rainwater to be consumed on site. The key is to carefully construct and connect the ecological corridors and ventilation corridors within the city, connecting dispersed ecological spaces such as parks, green spaces, and water systems into a network. This can not only promote air circulation and alleviate the heat island effect, but also provide residents with multifunctional green spaces for leisure, commuting, and emergency evacuation, enhancing the comprehensive regulation capacity of the city. Thirdly, we need to strengthen technological support and intelligent empowerment to achieve precise prevention and control. Artificial intelligence (AI) technology provides innovative means to address the uncertainty and complexity of disaster risks, and its integrated application in ecological disaster prevention and reduction has shown significant potential. AI technology can run through key links such as disaster risk assessment, optimization of disaster reduction plans, implementation monitoring, and effectiveness evaluation, promoting the transformation of disaster prevention decision-making from empirical judgment to data-driven. For example, by constructing an intelligent closed loop of "perception analysis decision feedback", it is possible to achieve dynamic simulation of urban disaster scenarios, real-time monitoring and adaptive regulation of "blue-green grey" infrastructure functions, thereby enhancing the overall resilience of the region and the refinement level of safety governance. In the future, efforts should be made to promote the deep integration of artificial intelligence and ecological disaster prevention and reduction systems, empowering technology to achieve visible, known, and controllable disaster risks, and providing solid support for the construction of resilient cities. Fourthly, we should highlight regional linkage and joint construction and governance, and consolidate the overall synergy. To address the diverse and complex climate risks in a region, it is necessary to go beyond a single city and plan comprehensively at the level of metropolitan areas and urban agglomerations. The Yangtze River Delta Ecological Green Integration Development Demonstration Zone has carried out beneficial explorations in planning coordination, standardization, engineering linkage, emergency linkage, and other aspects, focusing on solving the management fragmentation problem caused by administrative boundaries. The construction of resilient cities also relies on the participation of the whole society. It is necessary to strengthen science popularization, enhance public awareness of disaster risks, and improve self rescue and mutual aid capabilities; Encourage communities, businesses, and social organizations to participate in the ecological and resilient transformation of small and micro spaces around them, forming a vivid situation of "people's cities built by the people and people's cities for the people". People do not disappoint the green mountains, and the green mountains will definitely not disappoint people. Standing at a new starting point of building a modern people's city, facing complex and ever-changing risks and challenges, we need to take a long-term perspective and deeply understand the significant importance of building a solid natural foundation and strengthening systematic governance in ensuring the long-term stability of the city. We must take the spirit of the Central Urban Work Conference as a guide, firmly follow a new path of urban development that is connotative, intensive, and green, and integrate the concept of resilience throughout the entire process of urban planning, construction, and management. We will strive to build a number of safe and livable cities that can withstand wind and rain tests and carry the people's beautiful lives, laying a solid safety foundation for the modernization of Chinese characteristic cities. Author: Dai Daixin (Associate Professor at the School of Architecture and Urban Planning, Tongji University, and Director of the Landscape Space Intelligence Research Center at the International Cooperation Joint Laboratory for Ecological Urban Design); Bo Mingyang (PhD student at the School of Architecture and Urban Planning, Tongji University)