In the car, I hummed my secret code with Dali in a low voice. Every time the car turned, I would hum a tune. A specific tune represented each of the eight directions. To prevent Dali from being confused, I left him a note.

It was fine having someone trail us in the city, but a car would definitely be spotted once we entered the outskirts.

At around ten o'clock, we were in the outskirts of the city. In front of us was a toll booth. A traffic policeman walked over to speak to us so I showed him my consultant's ID and said, "We’re from the bureau. We’re escorting a suspect out of the city."

The traffic police looked uneasy, "I have to make a phone call to confirm."

"This is a confidential operation that only Director Sun knows. You’ll have to call him directly."...