The word "trace" serves as a versatile instrument in literature, often bridging the physical and the abstract. In some texts, it denotes a tangible remnant—a footprint or vestige left behind by human or natural activity—as when a solitary step in the wilderness hints at an earlier presence [1] or when barren walls reveal no trace of a door [2]. At other times, authors employ "trace" to chart the progression of ideas or emotions; for instance, it is used to follow subtle shifts in thought or sentiment, as seen when a delicate smile hints at underlying warmth [3] or when ideological threads are meticulously traced back to their roots [4]. In scientific or technical contexts, the term also implies a methodical detection of minute details, such as tracking signals from cell-group to cell-group [5] or following the arc of an instrument’s mark to measure a circle [6]. This multiplicity of uses enriches narratives by inviting readers to discern both the latent marks of history and the faint imprints of character and thought.