Shenzhen Futian Station of Guangzhou Railway Group is the first stop on the Guangzhou-Hong Kong Express Rail Link connecting Hong Kong and the mainland. Tang Xulin, foreman of the Futian Signaling Work Area of the Shenzhen North High-Speed Railway Signaling Workshop, is leading his colleagues to make intensive preparations for the skylight operation at night.
He is well aware of the conditions of the equipment in the tunnel, and any risk that affects train safety cannot escape his eyes. The temperature in the underground passage was a bit sultry.