If Li Xu really entered it, even after so long, it's still possible to find biological evidence or subtle traces left behind.
Fingerprints, skin flakes, or even a strand of hair that unintentionally fell out, may be preserved within the enclosed driving space.
Jiang An's thoughts quickly extend: there's limited personnel who normally use the excavator, not everyone can operate it.
If Li Xu indeed touched the machine that night, which parts would he most likely contact?
The control levers?
The dashboard?
The car door handle?
What forms of traces might be left on these contact points?
With this in mind, Jiang An slowly stands upright.
He realizes that he must immediately return to the scene for a systematic and meticulous inspection of the excavator's cabin.
Although half a year has passed, scientific evidence collection may still capture the silent fingerprints left by the culprit in that confined space.
