Group 1 - The Longyan Railway urbanization project is a key railway transportation project in Shandong Province and the first urban railway in the province, covering a total length of 46.6 kilometers [2] - The project includes the renovation of 4 existing stations and the addition of 6 new stations, with current completion rates of 47% for earthworks, 70% for bridge and culvert works, and 25% for tunnel works [2] - Upon completion, the project will facilitate urban public transport with direct trains from Yantai Station to the airport station, reducing travel time to approximately 25 minutes, significantly enhancing the efficiency of the transportation network and promoting economic development in Yantai [2] Group 2 - The Zangjia Grand Bridge, a major control project of the Longyan Railway, successfully completed its continuous beam construction, ensuring the project remains on schedule [1] - The construction utilized a cantilever casting method and a new lightweight, modular design for the hanging basket, improving efficiency and reducing risks associated with high-altitude work [1] - Stringent safety measures were implemented, including a three-tier safety assurance system and real-time digital health monitoring of the bridge, achieving a construction error control within 5 millimeters [1]