After going out.

Zhou Huai stared at Guan Feng, scrutinizing him as he remarked, "I never imagined that micro-expression analysis would be so useful during questioning. I'm even tempted to learn how to use it."

Liu Keming added, "Absolutely! Micro-expression analysis is a powerful weapon in many situations. You can tell what you're thinking and whether it's true or false at a glance. Is there any skill more useful than this? Speaking of which, I really envy Xiao Guan. He has mastered several real skills at such a young age. Compared to him, my more than 20 years of criminal investigation career seems like I've been working in vain."

Guan Feng said, "Captain Liu, Captain Zhou, please don't say that. Solving cases ultimately comes down to analyzing the case. Your experience is the key. These are just minor details."

Zhou Huai laughed and said, "Just tell me, can we learn this?"

Guan Feng said, "Of course you can! As the old saying goes, the best age to plant a tree was ten years ago, and the second best age is now. This technique doesn't require much talent. Captain Zhou, you have experience. If you learn some theory, I estimate you'll master it faster than others, in a year or two at most."

Zhou Huai asked, "Oh? Xiao Guan, you're not kidding?"

Guan Feng said, "No! I trained the team members on this before at the branch office, so I have some authority to speak on this."

Zhou Huai said, "Is that so?"

Liu Keming seemed to remember something and said with a smile, "I recall this incident. We even filmed a video back then, right?"

Guan Feng nodded and said, "Yes, a video was taken! It was mainly aimed at the branch office colleagues, the kind who don't have much experience, so it was all theory, quite simple, and didn't go into too much depth. It might not be of much use to Captain Zhou, but if Captain Zhou wants to see it, then I'll show off my limited skills before an expert. I'll have Lily send you a copy later."

Zhou Huai laughed and said, "It has to be issued, it absolutely has to be issued. I'll call on the Qingshui Branch Criminal Investigation Team to learn from this later."

Guan Feng said, "No way! Captain Zhou, just take a look and offer your suggestions."

Zhou Huai smiled and pointed at Guan Feng.