The Wuhan Yangtze River Tunnel is China's first cross-river traffic tunnel project on the Yangtze River. It is recognized in the industry as the "First Tunnel Across the Yangtze River". Its exploration technology requirements are high and its construction is difficult. Conventional exploration methods are not enough to solve the difficulties of underwater drilling and testing positioning. As the engineering survey unit for this project, MCC WSGRI Engineering & Surverying Incoporation Limited (WSGRI) successfully solved all the engineering problems encountered by combining a variety of advanced survey technologies, providing accurate geotechnical engineering survey data for the construction of the Yangtze River Tunnel project.