老楼焕新迎新春，门头沟16个老旧小区改造完成

Group 1 - The core viewpoint of the article highlights the successful completion of renovation projects in 16 old residential communities in the Mentougou District, benefiting 3,585 households ahead of the Spring Festival [1][3] - The renovation is part of a larger initiative launched in May 2025 aimed at comprehensive improvements of old residential areas, addressing issues such as deteriorating walls, leaking roofs, and poor drainage [3] - The largest project, Deluyuan, marks the completion of the renovation tasks for all 16 communities, showcasing significant improvements in building facades, waterproofing, and lighting in hallways [3][6] Group 2 - The renovation faced challenges such as narrow construction sites, safety requirements near high-voltage lines, and the need for coordination with residents, which required tailored solutions for each building [3] - To minimize disruption to residents, construction schedules were strictly regulated, with work limited to weekdays and specific hours, and high-noise activities concentrated during the day [3] - Additional improvements were made to address ongoing issues outside the renovation scope, such as the reinstallation of outdoor sewage pipes in response to resident complaints, enhancing the overall environment [4]