The protagonist Lin Xiao accidentally acquires a passive visual mutation, which allows him to intuitively "see" core information related to "military secrets" in flat media (paper, photos, telegram manuscripts) and close target memories in the form of "key points" and "death countdowns". He must touch the target information carrier with his hand to activate his vision, and each use consumes mental energy, resulting in temporary blindness or severe migraine as a price. The golden finger is not a universal scanner, but provides the "coordinates" and "urgency" of intelligence. Deciphering the code, understanding the intelligence, and taking action still require the protagonist's wisdom and courage, forming a unique sense of "knowing where the answer is, but you need to get it yourself."
