"Lijun, don't read it," Noah said nervously.
But Lu Lijun continued to read the details of the file. Memories from the past flashed before his eyes when he saw the picture of another man: his robotics teacher.
"What is it, teacher?" a young boy's voice echoed in Lu Lijun's mind.
"Lijun, this is a new device my friend and I are developing. It's a tracker device."
"What is it for?"
"Umm, it has various uses, like tracking someone's whereabouts. For example, a police officer can attach it to a suspect's vehicle to monitor their movements and locations, which could help in investigations. Isn't it a noble cause?"
"It sure is."
