On September 13, as the tunneling button was pressed, the massive cutterhead of the "Fuxing No. 9" shield machine began to roar and rotate. The project's first shield machine was successfully launched on the left line of the section from Nanwang Station to Century Park Station, marking that the project has officially entered the shield tunneling construction stage.

The project has a total length of 3.8 kilometers. The four stations from south to north are Sports Park Station, Nanwang Station, Century Park Station, and Jianhua South Street Station; the three shield tunneling sections include Sports Park Station to Nanwang Station, Nanwang Station to Century Park Station, and Century Park Station to Jianhua South Street Station. The left line of the section from Nanwang Station to Century Park Station is 888.048 meters long, including a total of 111.55 meters of mined and open-cut sections. During planning, it was decided that the left line of the section's shield tunneling works would use a φ6470 earth pressure balance shield machine, launching from the large-mileage end shaft of Nanwang Station and receiving at the small-mileage end of Century Park Station.

From merely hearing about it, one can tell that shield tunneling construction is extremely complex, and every interlocking prerequisite must be in place. "In fact, the project team truly went to great lengths to ensure that this 'behemoth' could be successfully lowered into the shaft." In the early stage, personnel were organized to use on-site survey records, ground-penetrating radar detection, and other methods to study and analyze the geological and pipeline conditions of the section, forming an environmental survey report conducive to construction. The position of the left-line muck outlet was adjusted, and the shield tunneling construction scheduling and temporary facility layout were dynamically optimized, enabling the station main structure and the section to be constructed in parallel and ensuring normal launching and receiving. In addition, earth backfilling and layered compaction were used to fill the muck pit, protecting the stability of the station roof. At the same time, two 10 kV high-voltage power supplies and box-type transformers were equipped to meet the dual construction needs of the station and shield tunneling.

The "Fuxing No. 9" shield machine lowered into the shaft this time has an excavation diameter of 6.47 meters and weighs 400 tons. The project reinforced the soil at the launching end in advance to improve stratum stability and bearing capacity, putting a protective layer on the subsequent move-in of the "big guy." The cradle and reaction frame before the shield machine is lowered into the shaft are also crucial. Precise measurement and positioning were carried out according to the design elevation and axis to ensure the smooth assembly of the shield machine and clarify the launching attitude. The project also built a remote informatized monitoring system for the shield machine, networked with the group, to closely monitor construction dynamics.

During the construction of the mined tunnel section, ventilation, lighting, water supply and drainage pipelines, and cable layout were all listed and planned in detail. Technical briefings were conducted before operations so that safety production was implemented at every level. Through meticulous planning and strong control, the project advanced each key link in an orderly manner. As the mined tunnel was completed on schedule, the electric locomotive and trolley entered the shaft one after another. Immediately afterward, the shield machine's middle shield, front shield, cutterhead, and shield tail were successively hoisted into the shaft for assembly and commissioning. Everyone was on edge, ready to welcome the exciting moment of launching!

On the morning of September 13, witnessed by the construction participants, the cutterhead and shield body of the "Fuxing No. 9" shield machine were precisely "joined," and it will advance step by step toward Century Park Station to arrive there. "It is precisely the countless review and acceptance procedures, scheme optimizations, and the close preparations of the on-site working group that ensured this milestone arrived as hoped! In the future, only by continuing to safeguard with a craftsman's attitude and professional competence can the 'examination road' of engineering construction become steadier and more brilliant step by step."