"Crossing the mountains and crossing the mountains, Oolong entering the sea" is a true portrayal of the 10,000-ton heavy-duty trains on the Daqin Railway Line, which transport coal back and forth day and night, and it is one of the busiest energy transportation channels in China.

Daqin's main asset is its own several railways, connecting Shanxi, Shaanxi, Inner Mongolia and other parts of the country. About 30 million passengers and 700 million tons of cargo are transported each year, 600 million of which are coal. In terms of volume, the Daqin Railway has been regarded as the lifeline of the Chinese economy: "The delivery volume of goods is 692 million tons, accounting for 14.50% of the total volume of China's railway freight delivery. The completed coal delivery volume is 582 million tons, accounting for 582 million tons of coal in China's railways. 22.56% of the total sent."Editor/Ma Xue