Core Viewpoint - The project in Tongchuan City, Shaanxi Province aims to address water resource shortages through innovative rainwater management and ecological restoration, enhancing both water resource efficiency and environmental quality [1][2]. Group 1: Project Overview - The project covers an area of 23.13 hectares and has completed 95% of its construction since its commencement in January 2023 [1]. - It includes a comprehensive ecological system featuring a rainwater control system, wetland treatment system, irrigation system, and outdoor drainage systems [1]. Group 2: Innovative Systems - The project employs a "smart control - tiered purification - ecological integration" rainwater management system, tailored to the rainfall characteristics of the region [2]. - Key innovations include intelligent diversion and tiered control, ecological purification and water quality enhancement, and a dual-mode operation mechanism for landscape water safety [2][3]. Group 3: Economic and Ecological Benefits - The project optimizes investment efficiency by aligning construction costs with functional needs through a subsurface wetland system [4]. - It integrates flood control facilities with landscape parks, enhancing urban flood safety while improving residents' living environments [4]. - The project establishes a replicable "storage + landscape" technical system, providing significant reference for sponge city construction across the country [4].