The entrance to the restroom in the prison corridor.
Feng Mu habitually unhooked his electric baton and handed it to Wang Cong, saying, "Hold this for me, I'm going to the bathroom."
Wang Cong took the baton, nodded slightly at Feng Mu, and then lit a cigarette at the doorway, taking a drag and gently exhaling the smoke.
Feng Mu pushed open the bathroom stall door, locked it, and then took out his phone from his pocket, connecting to a call from a virtual number.
As soon as the call connected, he didn't rush to speak. Instead, he tapped a rhythmic signal on the phone case with his fingers, patiently waiting for the response of coded taps with different frequencies from the other side.
Until he confirmed that the code matches from the other side, Feng Mu then lowered his voice and asked, "Has something happened?"
