Under normal interrogation conditions, Zhou Quan did not actually have any advantage over the commanders of the Major Crimes Unit.
All he could do was use the special intelligence he possessed to gradually break down Ching Wing-si's psychological defenses.
As for whether he would need to employ unconventional interrogation methods afterward, that would depend entirely on Ching Wing-si's attitude.
If necessary, Zhou Quan would show absolutely no mercy.
Fortunately, Ching Wing-si was already like a startled bird, and her reaction did not disappoint Zhou Quan.
"Sergeant Zhou, as long as you don't hand me over to the mainland authorities, I'm willing to cooperate with you."
Ching Wing-si raised her ashen face and spoke pitifully, her eyes filled with pleading.
Nearly ninety percent of Kwan Chai-ba's wealth was under Ching Wing-si's control.
Even Kwan Chai-ba himself did not know the bank account or the Secret Key.
That alone showed Ching Wing-si's standing within Kwan Chai-ba's organization.
As someone in the business, how could she not know about the mainland's zero-tolerance attitude toward drug traffickers?
Even so, Ching Wing-si could not possibly tell them everything she knew without reservation.
Despite claiming she was willing to cooperate with Zhou Quan, she had actually revealed no useful information beyond admitting that she knew who he was.
In particular, no matter how terrified she had just been, Ching Wing-si had still not openly acknowledged the bank account and the Secret Key.
She would not act without something concrete in return!
Until she received promises of terms that truly benefited her, Ching Wing-si would take that bank account to her grave.
"Miss Ching, do you know who I am now?"
Glancing at Ching Wing-si's tear-streaked face, Zhou Quan's lips curved into an amused smile.
This woman was certainly no helpless weakling. Everything she was displaying now