春节假期，建设者坚守重大工程一线

Group 1: Major Infrastructure Projects - The Dazhu Railway, a significant project, is currently under construction with over 200 workers engaged in the challenging Hailigong Mountain tunnel, which is about 10% of the total 330 km railway length and traverses 19 fault zones [2][3] - The Pinglu Canal, a major waterway project, has seen an increase in workforce from 3,000 to over 4,000 during the Spring Festival, highlighting the urgency and scale of the construction efforts [3] - The Yellow River Guxian Water Conservancy Project is entering a new phase of construction, with advanced technology such as AI cameras and sensors being utilized to enhance project efficiency and safety [4] Group 2: Renewable Energy and Smart Technology - The construction of the pumped storage power station in Jiangxi is supported by a dedicated team of over 170 workers, emphasizing the commitment to ensuring project progress during the holiday season [7] - The Yebatan Hydropower Station, located at a high altitude, is utilizing a digital management platform to ensure continuous concrete pouring, showcasing innovation in construction practices [8] - The Zang-Gui DC project, the world's first four-terminal ultra-high voltage flexible DC project, aims to deliver over 43 billion kWh of clean electricity annually, demonstrating the integration of renewable energy into the national grid [8]