Watch how workers assemble a giant shield #machine inside a cavern of the Longgang Tunnel on the Shenzhen-Shenshan high-speed #railway. Hundreds of split parts are pieced together in an area too cramped for large cranes. | Collector

Watch how workers assemble a giant shield #machine inside a cavern of the Longgang Tunnel on the Shenzhen-Shenshan high-speed #railway. Hundreds of split parts are pieced together in an area too cramped for large cranes.

China Daily

Watch how workers assemble a giant shield #machine inside a cavern of the Longgang Tunnel on the Shenzhen-Shenshan high-speed #railway. Hundreds of split parts are pieced together in an area too cramped for large cranes.

Watch how workers assemble a giant shield #machine inside a cavern of the Longgang Tunnel on the Shenzhen-Shenshan high-speed #railway. Hundreds of split parts are pieced together in an area too cramped for large cranes.

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