If it were Mark Pen himself, would he have noticed this observation post?
In broad daylight, he certainly would have, after all, if someone on the upper floor was watching him so intently with a pair of binoculars, it would be obvious that something was wrong even to someone with no brains.
But the key point is that it is now night, and if it's just about the scope, indeed, the scope allows for night vision, but what's the visibility range of a scope?
However, what Mark Pen didn't know was that, in such a night, the darkness was no problem for Ren He at all. His field of view at night was as extensive as it was during the daytime!
But within that brief gap between shots, Mark Pen had already quickly scrambled out from under the car to hide behind another vehicle, a cover his teammate had bought him with their life. He had to cherish it.
