Advance, dock, shovel, unload... In the Yuanbao Mountain Open-pit Coal Mine of Pingzhuang Coal Industry of the State Energy Group, an electric shovel nearly 14 meters high and a deadweight of 490 tons is busy operating. It can load about 16 tons of coal with one shovel. Looking closer, there was no one in the cab. 3 kilometers away, Zhao Xiujun, the driver of the electric shovel, manipulated the handle to accurately control every movement of the electric shovel: "With the help of 5G technology,