Aunt Cuihua had rarely dealt with officials in her life, let alone encountered a murder case. And since news traveled so slowly in those days, she naturally knew nothing about forensic techniques like fingerprinting.
When she heard Cheng Beilin mention fingerprints, she asked with a look of curiosity.
So, Cheng Beilin patiently explained what fingerprints were and some other forensic knowledge, like how the police used them to identify criminals.
Aunt Cuihua was completely bewildered, her eyes practically spinning in their sockets. "Good heavens, that's so complicated! It sounds amazing."
As she spoke, Aunt Cuihua looked at Cheng Beilin with admiration and gave her a thumbs-up. "Xiao Lin, you're really something else, kid. To know so much... that's incredible."
Cheng Beilin gave a small smile. "It's nothing, really. I just read a few books and remembered some things."
