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]

Group 1 - The Hangzhou to Quzhou high-speed railway has officially started static acceptance work, indicating that the main construction is nearly complete, moving towards operational goals [1] - Static acceptance is a crucial step in the completion acceptance of new railway projects, involving a comprehensive quality check of construction and equipment installation [1] - The Hangzhou to Quzhou high-speed railway spans approximately 131 kilometers with a designed speed of 350 km/h, serving as a significant project in Zhejiang Province's "Great Corridor" construction [1] Group 2 - The Hangzhou Airport high-speed railway has made significant progress with the successful advancement of the Qiantang River tunnel construction, achieving a breakthrough of 1,000 rings and a cumulative excavation of over 2,000 meters [1][2] - The Qiantang River tunnel, measuring 5,328 meters in total length, is a key control project for the Hangzhou Airport high-speed railway, featuring a challenging construction process [2] - Once operational, the Hangzhou Airport high-speed railway will enhance connectivity between the Hangzhou-Shaoxing-Taizhou line and regions such as Shanghai and southern Jiangsu, significantly improving transportation efficiency along the coastal high-speed corridor [2]