Zhang Hancheng skipped over that and summarized the findings of the social network investigation on Li Siyu.
"So? What are your thoughts?" Zhang Hancheng finally asked.
Qian Zidan froze for a moment. When he came to his senses, he moved to light a cigarette for Zhang Hancheng again.
Zhang Hancheng waved his hand away, telling him to get to business.
Qian Zidan forced a smile. After a moment of thought, he asked, "Old friend, where did you guys get that bird?"
The common criminals that the police deal with sometimes have a certain degree of counter-surveillance awareness.
But standard tracking methods, combined with CCTV, are usually enough to handle them.
But the opponents State Security faces are different.
Some of them are battle-hardened, professionally trained, real-life spies.
For a spy, the number one priority is always to stay hidden.
Therefore, counter-surveillance and counter-tracking are their most fundamental skills.
