With the acceleration of global urbanization, the population density of cities continues to increase.The United Nations predicts that,two thousand and fiftyThe world will have68%The population resides in the city.However, as the size of the city expands, the various risks it faces also increase.From natural disasters to man-made accidents, from economic fluctuations to social unrest, these challenges require cities to have stronger risk resistance and recovery capabilities，To ensure the safety and well-being of residents. In this context, the concept of resilient cities has emerged as an important direction for future urban development.

Resilient city, in short, refers to the ability of a city to maintain or quickly recover to a normal operating state in the face of internal and external risks and challenges. It emphasizes the flexibility, adaptability, and resilience of urban systems to ensure that cities maintain functional stability in times of crisis, guaranteeing the continuity of residents' lives and socio-economic activities. Regarding the solidity of urban infrastructure and the improvement of emergency management system.

The essence of resilient cities is to build a dynamic defense system for life like organisms. Its core competencies can be divided intoTo prevent, absorb, adapt, and recover.Firstly, it has strong preventive capabilities, identifying and eliminating potential risks in advance through measures such as risk assessment and early warning monitoring; Secondly, resilient cities have excellent absorption capacity, which can quickly absorb shocks during crises and mitigate the impact on urban systems; Furthermore, resilient cities also have excellent adaptability, able to quickly adjust resource allocation and optimize system functions to adapt to changes brought about by crises; Finally, resilient cities can quickly restore infrastructure, social order, and economic activities after a crisis, ensuring that the city resumes normal operations as soon as possible.

These four core competencies are interrelated and work together,such"monitor-buffer-adjust-regenerate"The closed-loop mechanism makes the city like the human immune systemSimilarly,Being able to maintain stable operation in the face of risk challenges.