Group 1 - The Hangzhou Airport High-Speed Rail project has completed over half of its bridge construction, with significant progress on the west and east tunnel projects [2] - The west tunnel, which is 3,255 meters long, is nearing completion with continuous work since December 2024, while the east tunnel, at 4,988 meters, is progressing steadily since June 2025 [2] - The Jiangdong Grand Bridge, an important part of the Hangzhou Airport High-Speed Rail, has successfully completed the first box girder installation, with a total length of 6.617 kilometers and a design speed of 350 km/h [2] Group 2 - The Hangzhou-Chun'an-Kai Highway project has entered the substantial construction phase, with a total length of approximately 184.1 kilometers, including 163.3 kilometers of new construction [3] - This highway is a crucial component of the national expressway network and supports the strategic development of the "West Extension of the City West Science and Technology Corridor" [3] - Upon completion in 2029, the highway is expected to enhance regional economic development and promote tourism in the surrounding areas [3]