Group 1 - The completion of the last pair of rail joints for the Shenzhen Metro Line 13 Phase II North Extension marks a significant milestone in the construction progress, achieving "long rail connectivity" [1] - "Long rail connectivity" is a crucial node in subway construction, allowing for seamless welding of rails to prepare the line for vehicle testing [1] - The project has faced challenges such as complex surrounding environments and limited work areas, but has successfully utilized new technologies and innovative construction methods to ensure high-quality completion [1] Group 2 - The North Extension of Line 13 spans 19.25 kilometers, starting from Shangwu Station in Bao'an District and ending at Lishongli Station in Guangming District, with 11 stations planned [2] - Once operational, the North Extension will connect the Nanshan, Bao'an, and Guangming districts, alleviating north-south traffic pressure in western Shenzhen and significantly reducing travel time for citizens [2] - The extension will enhance rapid connectivity between key areas such as Guangming Science City and Nanshan Technology Park, further promoting the interconnectivity of the Guangdong-Hong Kong-Macao Greater Bay Area's rail transit [2]