Core Viewpoint - The article highlights the increasing frequency of extreme weather events, particularly heavy rainfall in northern China, and emphasizes the need for updated flood safety awareness and preparedness among urban managers and citizens [1][2][3]. Group 1: Extreme Weather Events - Northern regions, traditionally known for less rainfall, are now experiencing significant rainfall events, with some areas reporting nearly 40% of annual rainfall in just a few days [1]. - From June 1 to the present, Beijing has recorded over 432.7 mm of rainfall, which is 75% more than the average for the same period [1]. Group 2: Climate Change Impact - Meteorological experts attribute the increase in extreme rainfall to global climate change, specifically the abnormal strengthening of the Western Pacific subtropical high pressure [2]. - The traditional perception of northern China as a low-rainfall area is becoming outdated, necessitating a shift in flood management strategies [2]. Group 3: Flood Safety Awareness - There is a pressing need for enhanced public awareness regarding flood safety, as the unpredictability of extreme weather poses significant risks [3][4]. - The Beijing flood control department has set specific thresholds for issuing red alerts, indicating a structured approach to weather warnings [2]. Group 4: Urban Management and Infrastructure - Urban planners and managers must adapt to the new reality of frequent extreme weather by improving flood prevention standards and infrastructure [6]. - The article suggests a systematic approach to building resilient cities, including the development of sponge cities and enhanced drainage systems [6]. Group 5: Risk Assessment and Mitigation - Experts recommend reassessing existing spatial planning and implementing targeted disaster prevention measures based on risk levels [6]. - There is a call for improved monitoring and early warning systems for small-scale extreme weather events, particularly in mountainous areas [6].