Group 1 - The Jinan Metro Line 4 and Line 8 have successfully passed project engineering acceptance, indicating readiness for trial operation [1] - Line 4 is scheduled to start a three-month trial operation on August 31, with an expected opening by the end of 2025 [1] - Line 8's first phase has begun dynamic debugging in June, with a total length of 25.5 kilometers and 14 stations, aiming for operation by the end of this year [1][2] Group 2 - The Jinan Metro Line 6 East Section, a key project in the city's transit network, has made significant progress, with dynamic debugging entering the final phase [2] - The East Section of Line 6 spans approximately 19.5 kilometers with 17 underground stations, focusing on seamless integration of various systems [2] - The High-tech East District Yunba project has commenced a three-month trial operation, expected to open in early December, featuring a unique design and energy-efficient technology [2][3] Group 3 - The Yunba project will connect to the Jinan Metro network through five transfer stations, enhancing commuter convenience and addressing public transport congestion [3] - The Jinan Metro Group is committed to standardizing construction and expediting station renovations and safety assessments to ensure timely operation of all lines [3]

Group 1 - The Jinan Metro Group announced the commencement of a three-month trial operation for Line 4, starting on August 31, with an expected operational launch by the end of 2025, focusing on safety and reliability testing [1] - The construction of the eastern section of Line 6 has made significant progress, with key tasks completed and the trial operation entering a critical phase, aiming for operational readiness by the end of the year [3] - Line 8 Phase I has begun dynamic testing, which will last for two to three months to ensure all systems meet design standards for safe operation, with multiple teams conducting 24-hour testing [5] Group 2 - Line 8 connects Zhangqiu District with the main urban area, spanning 25.5 kilometers with 3 underground and 11 above-ground stations, expected to open by the end of the year alongside Line 4 [6] - The High-tech East District Yunba project has started a three-month trial operation, expected to open in early December, featuring a fully automated system and unique design for energy efficiency and noise reduction [8] - The Yunba project will connect seamlessly with the Jinan Metro network through five transfer stations, enhancing commuting convenience for residents and workers [10]