Psychological Suggestion?

[The hospital nurses seemed to know the full story behind every "family member." The chance of pretending to be one and getting away with it, only to be exposed and put in danger, was 98%. That wasn't an option.]

[All the patients in the lobby who were within sight showed some signs of frostbite. Frostbite seemed to be a widespread phenomenon, and it had some special significance. The focus should be on that significance.]

The moment he met the stern-faced nurse's gaze, Zhang Yu's mind flashed through a series of deductions.

His own thoughts mingled with the sacrificial ability bestowed on him by the system, forming a "record of thought" in his mind, much like a case file. He could consult it at any time to fill in the gaps, or even search through past entries.

Faint streams of data flickered in Zhang Yu's eyes, almost too dim to notice, as they rapidly scanned the nurse from head to toe.

The nurse wore a standard uniform. Its pink and white colors were bright and fresh, yet seemed somewhat out of place in the surrounding frozen area.

She was clearly older than the other nurses, and carried herself with more authority. While the others still spoke in a relatively gentle manner, she could already keep a cold expression to show her superior status.

That look... seemed much like the old security guard's. It suggested a certain fearlessness.

[In other words, like the old security guard, she has some kind of special privilege. It gives her a way of behaving that sets her apart from others. Until I know more about her, I shouldn't provoke her.]

[Judging by the lip movements of the second nurse on the left, outsiders like tour groups are still people they need to treat well.]

These analyses