Group 1 - Hefei Metro Line 7 Phase I security equipment bidding has been initiated, with the S1 line fully connected, both lines expected to be operational by 2026 [3] - The Hefei Metro Line 7 Phase I will start at Songlin Road Station and cover approximately 20 kilometers, connecting major areas and alleviating traffic pressure on Huizhou Avenue [3] - The estimated contract value for the security equipment procurement and installation project is 10.05 million yuan, with a completion deadline of July 1, 2026 [3] Group 2 - The S1 line, the first urban railway in Anhui Province, has achieved a significant milestone with the completion of track laying, marking the full connection of the line [4] - The S1 line spans 47.5 kilometers and includes 14 stations, connecting key transportation hubs, significantly reducing travel time from XinQiao International Airport to downtown Hefei to under 30 minutes [4] - Plans for the west extension of Metro Line 6 and revisions to the fourth phase of Hefei Metro construction are underway to enhance connectivity [4]

Core Points - The Nanjing Metro Line 10 Phase II has successfully completed track laying and is now in the mechanical and electrical installation and decoration phase [1] - The total length of Line 10 Phase II is 13.35 kilometers with 10 stations, including 6 transfer stations [1] - The Daxiaochang Station is a major transfer station, approximately 581 meters long, which is double the size of a standard station [1] Construction Details - The construction of the underground station and the commercial area is complex, with a foundation pit perimeter of 1629 meters and an area exceeding 100,000 square meters, equivalent to 10 standard football fields [1] - The Airport Runway Old Site Station is a three-line transfer station, featuring a large and deep triangular foundation pit with a maximum depth of 24.5 meters and around 50 corners [2] - Due to the proximity to historical sites, the project employs an automated monitoring system for the foundation pit to ensure stability and control during construction [2] Future Impact - Upon completion, Line 10 Phase II will enhance the east-west transportation corridor in the southern part of the main urban area, connecting Jiangbei New District, the main city, and the southern new city with the Qilin area [2]