C563 A Group of Children

"Do you know how they traced the girl?" I asked.

"I don't know." Zhao Tian shook her head and said: "But I'm guessing that she must have some sort of tracking device installed on her body, and it isn't difficult for Zhang Tao. In the past, the Bluebird Company often used this method to track people, and all of these methods were taught to them by Zhang Tao."

I nodded