The S06 mark of the deep and medium passage is a project of Etong Teji's large-diameter rock-socketed pile using rotary excavation technology. The project has a total of 144 piles, pile diameter 2.5m, pile depth 70-90m, rock strength 60-90MPa, rock penetration depth 10-20m. In the construction, Yitong Teji adopted hierarchical drilling technology, innovated and applied technologies such as dual-direction roller bit, mud-directed circulation, and optimized drilling tool tooth arrangement. Under the premise of ensuring construction quality and safety, the work efficiency reached the total contract and The request of the owner unit and received their unanimous praise. At the same time, it has been highly recognized by the owner's Shenzhen-China Corridor Management Center: in January 2021, it was awarded the title of "Excellent Team Award" in the second phase of labor competition of the bridge engineering of the Shenzhen-China Corridor Project.

The construction of the S06 bidding project of Etong Teji Shenzhong Passage started on April 28, 2019 and was successfully completed on December 27, 2020.