Li Zijun is no longer dealing with this case, but Du Qiang is still involved. This case is not a small one, and a lot of police resources have been deployed. Du Qiang is one of them, though he's responsible for the aftermath.
But anyway, there's finally someone familiar present, plus his role as a criminal investigation consultant, so he's sort of an insider.
As for him wanting to learn more about the case, Old Lin wouldn't refuse. He was even hoping he could ask some more valuable leads. After all, Su Qing's performance in the police station over the past half-year has been quite impressive.
Even the big leaders in the bureau recognize his abilities, let alone people like Elder Zhao and Old Lin, who have experienced it firsthand.
Soon, he took Du Qiang with him to the detention center. The people are no longer at the police station; they're at the detention center since the police station doesn't have enough space for them.
