The Longfeng Avenue project in Tongzi County starts from Liaoyuan North Road (Tongzi County Civic Fitness Center) and ends at the intersection of Heping Road and Fengming Road, with a total length of approximately 3.073 kilometers, including a 280-meter-long Maoshan Tunnel. The entire road is 24 meters wide with four lanes allowing for two-way traffic, designed for a speed limit of 40 kilometers per hour.

　　The Longfeng Avenue project aims to improve the urban road network structure. Once completed, the travel time from Liaoyuan North Road to Fengming Road will be reduced to about 5 minutes, effectively alleviating traffic pressure in the county and making travel more convenient for residents. This project is crucial for promoting regional economic development and urbanization.

　　The LanHi LDJ400A Multifunctional Tunneling Machine is specifically designed for non-explosive tunnel excavation. It utilizes high-frequency hammers or breakers to impact and break rocks, or uses bucket teeth or rod wedges to crush rocks, while also utilizing the gravity below the surrounding rock to automatically break rocks. This machine can be operated locally or wirelessly controlled and is suitable for excavating tunnels with diameters ranging from 6 to 9.5 meters.

 　　It integrates functions such as high-frequency rock breaking, rapid excavation in soft soil, profile trimming, and spray dust removal, suitable for construction in areas where blasting is restricted, such as airports, residential areas, and wildlife reserves. This machine is highly adaptable, capable of handling various types of surrounding rocks, and can reduce excessive or insufficient excavation, as well as prevent collapse and other issues.