Thud!
As soon as Clark landed on the underground floor, the impact transmitted to his body made him arrive at a ton of deductions immediately. This underground route was recently dug, and it was a rail just like the one he came through.
As his brain made all these discoveries, his eyes were already alert as he rapidly surveyed the overall layout of this underground escape route.
From the corner of his eyes, he saw what he was looking for. A mini-train just like the one he came on was currently moving into the distance, and a group of soldiers armed to the teeth sprinted forward with it to protect it.
Behind the mini-train stood another group of soldiers. From their stance, they were clearly ordered to stay behind and to intercept any assassin that was able to get here.
Seeing Clark break into the underground rail so swiftly not long after they came down here, the soldiers were clearly shocked.