Core Viewpoint - The article highlights the expected heavy rainfall during the National Day and Mid-Autumn Festival period in China, which may lead to significant flooding in various river basins, prompting authorities to take preventive measures [1][2]. Group 1: Rainfall and Flooding Forecast - Heavy rainfall is forecasted in several regions, affecting major rivers such as the Yangtze, Yellow, Huai, and Pearl Rivers, with specific rivers like the Han River and the Yu River expected to experience significant flooding [1]. - The Han River may experience a numbered flood, while the Yu River and some smaller rivers in the affected areas may exceed warning levels [1]. Group 2: Preventive Measures by Authorities - The Ministry of Water Resources has organized a special meeting to analyze and prepare for the rainfall and flood situation during the holiday period, issuing notifications to various provincial water departments to enhance monitoring and forecasting [2]. - Authorities are instructed to implement precise water management strategies, utilize key water engineering projects for flood control, and ensure the safety of small reservoirs and construction sites during the flood season [2]. - Emphasis is placed on the need for timely warnings and evacuations, particularly considering the increased tourist activity during the holidays, with specific measures outlined for managing potential flood risks [2].