In the setting of suspense novels, authors often design some ways to hurt people in a way that can create tension without attracting attention. Here are some common ideas that can add mystery and complexity to the story: 1. Hidden syringe or fine needle: The character may carry a small syringe that looks ordinary but has been modified to contain a slow-acting poison or sedative. The needle can cause minor wounds without attracting the attention of people around by just accidentally touching the target's skin. 2. Hidden blades or micro weapons: Sharp blades, scissors or needles are cleverly hidden in everyday items (such as watches, pens, or even clothes), making the attack process quick and almost silent. The attacker can use this weapon to cause stabs or cuts at close range. Although the wound is not large, it is enough to weaken or distract the victim. 3. Hidden traps: Use carefully designed mechanical devices, such as small traps hidden in the floor, furniture or other daily necessities. When the target accidentally triggers it, the mechanism can quickly apply pressure or a small amount of sharp objects pierce the skin, causing seemingly accidental minor injuries. Such mechanisms are often designed to work only under certain conditions, thus adding to the suspenseful atmosphere. 4. Silent contact with toxic substances: In addition to direct injection, characters may also use objects soaked in poison (such as tissues, envelopes or drinks) to achieve the purpose of harming the other party. As long as the target has a brief contact with it, the skin may absorb enough toxins to cause internal damage or coma symptoms, and there are no obvious traces or sounds on the outside. 5. Precisely targeted blows or self-injuries: In some cases, the character may intentionally grasp certain parts of the human body that are extremely sensitive to nerves or blood vessels, and inflict extremely light blows or stabs, so that the wound is not obvious on the surface but is enough to cause internal bleeding or dysfunction. Such trauma is difficult to be detected by others, and can also be used as a metaphor to portray the character's inner struggle and determination. It should be noted that the above plot elements are only used as the setting and creative source of the novel plot. When creating, the author should pay attention to balancing logic and suspense, and try to avoid overly detailed or realistic descriptions of violence to avoid unnecessary imitation and misunderstanding. Through sophisticated narrative and careful characterization, these quietly hurtful details can greatly enhance the tension of the story and the complexity of the characters.