For a moment, Gu Yang felt that Gu Jin's gaze was familiar.
However, Gu Jin quickly looked away. Gu Yang reviewed the plot according to what she knew from the original book, but couldn't find an answer. In the end, she could only classify the inexplicable familiarity as the hippocampus effect.
The hippocampus effect, also known as the déjà vu effect, is the sudden feeling that one has "experienced a scene or something in a certain place" in a real environment (as opposed to a dream). According to most people's recollections, it is as if one has seen a scene in a dream but had forgotten it. Later, when one encounters the scene in reality, the feeling of familiarity arises.
