Core Viewpoint - The article highlights the significant increase in rainfall in Beijing over recent years, particularly noting the impact of the South-to-North Water Diversion Project on the region's water supply and ecological environment [1][2]. Group 1: Rainfall Statistics - In 2021, Beijing experienced a total rainfall of 792.6 millimeters, with July alone recording 400.4 millimeters, marking the highest monthly rainfall since 1951 [1]. - The summer and autumn of 2021 saw a 65% increase in rainfall compared to previous years [2]. - As of October 9, 2023, Beijing recorded a cumulative rainfall of 904.3 millimeters, breaking the previous record of 899.2 millimeters set in 1961 [4]. Group 2: Ecological Impact - The increased rainfall has led to a rise in groundwater levels in North China, contributing to improved ecological conditions and even changes in local climate, making it more humid [1]. - The abundance of rain has resulted in lush vegetation, with various plants and flowers thriving in the city, showcasing a vibrant natural landscape [6][7]. Group 3: Weather Patterns - Recent weather patterns in Beijing have shown an increase in unexpected rain days, with instances of rain occurring on days forecasted as clear or cloudy [4]. - The phenomenon of rain occurring during sunny days has become more common, leading to unique weather experiences such as sudden downpours followed by rainbows [4][5].