The sky gradually dimmed, but there was no progress in the search.
The area around the Sizhenshan Bridge was truly vast, and even though the search began on the east side per Liu Guodong's suggestion, no one knew how far north or south the east side extended.
So, the range had to be expanded as much as possible.
Fortunately, Lu Chuan had finally finished debugging the variable frequency laser spectrometer, and with a sweep of the laser, it covered a vast distance, greatly speeding up the search process.
"Lu Chuan... does this thing really work?"
Old Bai was still somewhat skeptical about Lu Chuan's method, as he had never seen it before.
What gas chromatography method...
Completely incomprehensible.
Hadn't even heard of it.
