As he walked, he said, "These stairs are concrete and relatively coarse, making it difficult to leave footprints."
"But if there are any footprints, I must examine them carefully."
Wan agreed, saying, "Exactly!"
"This place is rarely visited, even if a few people come here for a cheap date, it's likely just on the first or second floor."
"If footprints appear on higher floors, I think they are highly suspicious."
Jiang An immediately gave a thumbs up.
"Wan, I agree with you, any footprints here are highly suspicious."
Zhang Yean looked at Wan in disbelief.
"Wan, your professional skills have suddenly improved a lot."
"Thank you for the praise, but I'm still learning."
"I've learned quite a bit working on major cases with my junior lately."
"You're too kind, senior!"
"In the future, I hope you and sister will look after me."
Half an hour later, the three of them reached the corner of the seventh floor.
Suddenly, Jiang An stood still, staring at the concrete floor.
