Group 1 - The Shenzhen-Huizhou Intercity Dapeng Line's first construction section has successfully completed the right-line shield tunnel, achieving over 85% completion with 5,853 rings built, laying a solid foundation for the project's full line completion [1] - The Dapeng Line spans 39.4 kilometers with a design speed of 160 km/h, featuring a 6.1-kilometer section that includes three working wells and two shield sections, marking it as the first domestic project to use a fully automated conveyor belt system for shield soil transportation [2] - The project team has set a record for the fastest daily excavation rate on the entire line, achieving 12 rings in one day while overcoming significant geological challenges, including crossing operational high-speed rail lines and major roads [3] Group 2 - The Dapeng Line is a key project supporting Shenzhen's "Eastward Strategy," enabling a half-hour commuting circle between Dapeng, Longgang, and Pingshan, and facilitating quick access to core areas like Bao'an Airport and Nanshan [4] - The project will enhance the intercity railway network in the Greater Bay Area, improve Shenzhen's rail transit system, and accelerate the integration of Dapeng New District into the broader transportation network, supporting high-quality development in the region [4]