...
The train traveled through the dense forest, slow and steady. Every thirty seconds, a crisp clang echoed from beneath the carriage, the sound of the wheels rolling over the rail joints. Experienced passengers could tell from these monotonous road noises that the train was maintaining a speed of around twenty kilometers per hour.
"Ah... the fog is rolling in," Cui Zhen'en suddenly said, sticking his head out of the window.
Zhang Zhiyuan and the others followed his voice and looked out. The myriad branches between the trees had become distinctly hazy, as if a layer of unevaporable mist had permeated the air.
This was their third day since departure, and if the estimation of the journey wasn't wrong, they would enter the territory of City of Defense before nightfall.