Core Points - The first approved renewable energy transmission project in China, the Ningxia to Hunan ±800 kV UHVDC project, has commenced operation, capable of delivering over 36 billion kWh annually, sufficient for over 10 million households' electricity needs [1][3]. Group 1 - The "Ningdian Ru Xiang" project spans 1,616 kilometers, connecting Ningxia to Hunan, with a total investment of 28.1 billion yuan, and includes two new converter stations [3]. - The project is designed to prioritize renewable energy, with over 70% of the installed capacity coming from renewable sources, supporting large-scale development of the Shage Desert renewable energy base [3][5]. - Upon operation, the project will enhance Ningxia's electricity export capacity to 20 million kW, significantly improving the region's ability to absorb renewable energy [5]. Group 2 - The project will increase Hunan's electricity supply by approximately one-sixth, bolstering the economic competitiveness of high-energy industries such as advanced manufacturing and data centers [5]. - All equipment for the project has been domestically manufactured, ensuring stable and reliable operation, and it features significant technical advancements in UHV cross-intersection technology [7].

Group 1 - The Beijing Subway Line 22 (Pinggu Line) has completed the construction of the lower bridge structure in the Hebei section, marking a significant milestone in the project [1] - The line is approximately 30 kilometers long and includes 5 stations and 6 sections, which will reduce commuting time from Langfang's northern three counties to Beijing's sub-center to as little as 9 minutes [1] - The construction faced challenges due to complex environmental conditions, including liquefied soil layers, but the project team successfully implemented advanced construction techniques [1] Group 2 - The Ningxia-Hunan ±800 kV UHVDC transmission project has officially commenced operation, representing a key project in China's 14th Five-Year Plan for power development [2] - This project is the first approved UHV transmission corridor primarily for transporting renewable energy from the "Shagehuang" wind and solar base, with a total investment of 28.1 billion yuan [2] - The project enhances Ningxia's external transmission capacity to 20 million kilowatts, significantly improving the region's ability to utilize renewable energy [2] Group 3 - The Yukun High-speed Railway's key control project, the Binghui Tunnel, has successfully been completed, marking the first tunnel over 20 kilometers to be finished on the line [2] - The tunnel, located in Yunnan Province, utilized innovative construction methods to manage complex geological conditions and reduce risks [2] - With the completion of the Binghui Tunnel, 85% of the tunnels in Yunnan for the Yukun High-speed Railway have been completed, which is a crucial part of China's "eight vertical and eight horizontal" high-speed rail network [2]