He walked to the security office by the wall, took out his Defense Communication device, and dialed Sang Hezheng's phone number.
The ringtone rang only once before it was picked up.
"Inspector Cheng?" A rough yet enthusiastic male voice came from the other end of the line, accompanied by faint machinery noises in the background.
Cheng Ye spoke politely, "It's me, Master Sang. I've arrived at the entrance of the Mechanical Bureau; could I trouble you to make a trip?"
"Don't say that!" Sang Hezheng's laughter came through the phone, sounding particularly hearty, "Inspector Cheng visiting our Mechanical Bureau is an honor for me! I'll come out of the workshop to greet you right away. Please wait at the entrance for two minutes, I'll be there soon!"
"Alright, I'll wait for you at the security office here."
Cheng Ye hung up the phone and leaned against the wall, his gaze falling into the courtyard through the open gate.
Each factory building seemed like an independent work team.
