Core Viewpoint - The article discusses the critical flood prevention period in China, highlighting the challenges posed by extreme weather events and the measures taken by the Ministry of Water Resources to ensure safety and effective disaster response during this time [1][2][4]. Group 1: Flood Prevention Measures - The flood prevention period, known as "Seven Down, Eight Up," is characterized by complex and severe flood conditions, with early onset of flooding and extreme droughts in various regions [1][2]. - The Ministry of Water Resources has established a comprehensive flood disaster prevention system consisting of three main components: rainwater monitoring and forecasting, flood disaster defense work, and flood control engineering systems [1][4]. Group 2: Monitoring and Forecasting Systems - A total of 101 rain monitoring radars have been installed across 24 provinces, significantly enhancing the ability to monitor and forecast rainfall [3]. - The rainwater monitoring and forecasting system has been successfully applied during recent extreme weather events, providing timely warnings that facilitated the evacuation of over 100,000 people during severe flooding in Guizhou Province [5][3]. Group 3: Responsibility and Coordination - The Ministry of Water Resources has published a list of 2,792 flood prevention responsibility holders to ensure accountability and effective disaster management [4]. - 23 provinces have established flood disaster defense centers to enhance decision-making support and coordination during flood events [5]. Group 4: Engineering and Infrastructure - As of the end of 2024, there are 318,000 kilometers of levees in China, with 77,000 kilometers classified as important levees [6]. - The Ministry has completed the spatial coordinate mapping of 291,000 kilometers of levees, which will aid in real-time monitoring and decision-making for flood prevention [6]. Group 5: Flood Control Effectiveness - During the response to Typhoon "Butterfly," major reservoirs in the Pearl River, Yangtze River, and Taihu Lake basins were utilized to store 6.67 billion cubic meters of floodwater, demonstrating the effectiveness of the flood control engineering system [7].