Core Insights - The construction of two world-class clean energy projects, the world's largest mixed pumped storage power station and the world's largest water-solar complementary project, is progressing rapidly in the Sichuan region, with thousands of workers actively involved during the Spring Festival [1][2]. Group 1: Two Rivers Pumped Storage Power Station - The project is currently at a critical phase of underground excavation, with over 500 workers engaged in key areas to prepare for concrete pouring and electromechanical installation after the holiday [2]. - The project faces significant challenges, including extreme cold, low oxygen levels, and ecological fragility, while also addressing a world-class technical challenge related to the stable operation of large-capacity pumped storage units [2]. - A rigorous safety and quality management system is in place, including a night shift inspection mechanism and precise blasting techniques to ensure safety during excavation [2]. Group 2: Kola Phase II Photovoltaic Project - Located at a higher altitude, the Kola Phase II project faces severe challenges such as extreme temperature fluctuations and frozen ground, impacting both personnel and equipment efficiency [3]. - A comprehensive concrete "warming package" has been implemented to ensure proper mixing and curing, alongside providing workers with necessary protective gear and emergency facilities [3]. - The project is expected to contribute approximately 1.9 billion kilowatt-hours of clean electricity annually upon completion, enhancing power supply reliability [3]. Group 3: Overall Progress of Clean Energy Projects - Multiple clean energy projects, including the Dawa Pumped Storage Power Station and Yagen First Hydropower Station, are advancing rapidly, with significant construction activities ongoing during the Spring Festival [4][5]. - The Yagen First Hydropower Station is at a peak construction phase, crucial for its scheduled commissioning in 2028, with over 600 workers engaged in various tasks [5]. - The integration of smart technologies, such as intelligent drilling rigs and unmanned compaction machines, is enhancing construction efficiency across the projects [5].