Zhang Yean walked over, opened the drawer, and took out a pair of gloves, putting them on her hands.
Jiang An asked, "Senior sister, do you need my help in the fingerprint processing?"
Zhang Yean glanced at the small wooden door and said softly, "I think I can handle it on my own."
"Alright then, I'll stay nearby. If you need anything, just call me."
Zhang Yean nodded and gave a slight smile.
Zhang Yean then put on her glasses, opened the bottle of fuming reagent, and proceeded with the fingerprint fuming process on the lock of the courtyard, following the usual procedure.
A moment later, she exclaimed in surprise, "Junior brother, I found it."
"There are a total of three fingerprints on this door's lock."
"Moreover, all three fingerprints are thumbprints."
"Thumbprints?"
Jiang An immediately extended his right hand, looked at his thumb, and made a gripping motion.
Then, Jiang An took out his phone and dialed Mr. Zhao's number.
