"That's two questions!" Zhao Yu chortled. "You're in luck, I'm in a good mood so you get another one!
"Your truth serum is imperfect. Despite having administered the serum, Cui Lizhu still remembers the questions you asked her. All it took was a little hypnosis and she recalled everything!" Zhao Yu said solemnly. "I guess you guys already knew about the inadequacies of the serum. That's why you killed those experts, right?"
"Then… only a photo of the nesting doll remained. How did you manage to crack the code without the kaleidoscope?" the masked man repeated his question.
Heh!
Zhao Yu snickered to himself. Why did it sound as if he had said 'his mom' instead of 'nesting doll'? No wonder the Lip-Reading Device couldn't interpret it accurately! [1]