Entering prison like this wouldn't be too humiliating.
Moreover, learning new knowledge in prison also requires time; a short sentence wouldn't be interesting at all.
Of course, one couldn't really get trapped there; doing several years' time for nothing would be utterly not worth it.
Wei Zhenguo didn't do the interrogating himself. He just walked around the case center, seeing which team needed an extra hand, and would help out for the duration it took to poop.
As he wandered around, Wei Zhenguo stopped at Guo Jingbao's interrogation room.
"I really haven't done anything wrong recently. It's too much the way you're arresting people."
"No, I understand you want me to confess, that you have your tasks, but I really haven't committed any crime recently. What could I even confess to?"
"You ask the police station's folks; haven't I been showing up less lately?"
Guo, with his assured arguments, brought the interrogation room to a standstill.
Wei Zhenguo grew a little curious.
