Core Viewpoint - The successful completion of the last blasting at the Han Mountain Tunnel marks a significant milestone for the Shantou-Meizhou Expressway reconstruction project, aiming for completion and operation by the end of 2026 [1] Group 1: Project Details - The Han Mountain Tunnel, located in Fengshun County, Meizhou City, has a total length of 345 meters and is designed as a super-large span single-hole, single-direction four-lane tunnel [1] - Construction of the tunnel began on August 14, 2025, and is part of the first expressway reconstruction project in the mountainous and hilly areas of Guangdong Province [1] - The entire Shantou-Meizhou Expressway reconstruction project spans approximately 88 kilometers and is being built to a standard of eight lanes in both directions [1] Group 2: Regional Impact - Upon completion, the project will significantly enhance the highway traffic capacity and service level in the northeastern region of Guangdong, contributing positively to the improvement of regional transportation infrastructure [1]