Core Viewpoint - The construction of the Shenjiang Railway, a key project in the Guangdong-Hong Kong-Macao Greater Bay Area, aims to enhance connectivity between major economic zones, facilitating a half-hour high-speed rail link between Shenzhen and Guangzhou [2] Group 1: Project Overview - The Shenjiang Railway spans approximately 116 kilometers, with a design speed of 200 km/h from Shenzhen Xili to Guangzhou Nansha and 250 km/h from Guangzhou Nansha to Jiangmen [2] - A significant construction feature is the Guangzhongjiang Grand Bridge, which is 13.41 kilometers long and includes a T-shaped rotating bridge weighing 11,216 tons with a span of 160 meters [2] Group 2: Construction Methodology - The project employs a rotation construction method, where the beam body is first cast parallel to the existing railway and then rotated 30.2 degrees clockwise to achieve the connection [2] Group 3: Economic Impact - Upon completion, the Shenjiang Railway will connect the Qianhai Free Trade Zone in Shenzhen with the Nansha Free Trade Zone in Guangzhou, serving as a "golden channel" for economic and social development in the western Pearl River Delta region [2] - The railway will also interconnect with other major lines such as the Guangzhou-Shenzhen-Hong Kong High-Speed Railway and the Shenmou Railway, further enhancing regional connectivity [2]