It is feasible to rationally use environmental items for self-defense in emergency situations, but it must be emphasized that any act of force should be based on the principle of legitimate self-defense. The following are practical suggestions that meet the safety guidelines. Please always give priority to escape and alarm.： --- ###**1. The principle of item selection** 1. **Legal compliance** Ensure that the selected items are not controlled instruments (such as knives, throwing sticks, etc.) to avoid legal risks after use. 2. **Fast accessibility** Give priority to items that can be obtained within 3 seconds (such as keys, backpacks, umbrellas, etc.). 3. **Role priority** -**Defensive type**: schoolbag, folder (block attack) -**Interference type**: capsaicin spray (must be legally held), sand (eye-catching) -**Deterrent type**: Strong light flashlight, high decibel siren (forcing the opponent to retreat) --- ###**2. Practical application of common items** #### **1. Office/home scene** -**Folding chair** Hold the legs of the chair in both hands as a shield to limit the opponent's movement space and do not actively attack. -**Metal vacuum flask** After filling with liquid, it can be used as a blunt instrument. When throwing, aim at the area below the knee to destroy balance. -**Keyboard/thick leather book** Hold laterally to protect the key points of the head and neck, and the metal frame can strike the opponent's arm. #### **2. Carry-on items** -**Pen/key** It is sandwiched between the fingers to form a "fist stab", which is only used to break through the scratching (attacking the medial plexus of the elbow/upper arm). -**Belt** The metal head hits the leg, and the cloth belt can wrap around the opponent's wrist to create a chance to break free. -**Mobile phone** Strong light flashlight mode, direct light to the eyes + alarm sound, strive for 10-15 seconds escape time. #### **3. Public places** -**Fire extinguisher** Dry powder spraying creates a field of vision barrier (priority is given to spraying to the ground to form dust clouds), and the cylinder can be used as an anti-collision barrier. -**Shared bicycle** Push down laterally to form a barricade, and use the high-frequency noise of bells to attract attention. -**Beverage bottle** The unopened carbonated drink splashed on the face after shaking, and the plastic bottle was squeezed and thrown to interfere with judgment. --- ###**3. Core strategy (DEAL principle)** 1. **Distance (distance control)** Always use items to maintain a distance of more than 1.5 meters, such as using a long-handled umbrella against the opponent's torso. 2. **Escape (escape guide)** Evacuate to a crowded area immediately after any attack. 3. **Awareness (environmental utilization)** Making noises (breaking glass objects), triggering fire alarms, etc. attracted attention from the outside world. 4. **Legal Protection (Legal Protection)** Keep on-site video evidence, call the police in time afterwards and explain the self-defense process. --- ###**Four, key reminders** -**Neck/head attacks are prohibited**: May constitute excessive defense -**Avoid sharp device puncture**: Easy to cause uncontrollable damage -**Language deterrence takes priority**: Loud and clear warning "I have called the police!" "(Even if it is not dialed) -**Training necessity**: Regularly simulate muscle memory training such as grabbing objects and stepping back It is recommended to study the "Non-Lethal Self Defense Course" (Non-Lethal Self Defense) through a professional institution to systematically master the knowledge of legal boundaries and human weaknesses. The core of safety lies in prevention. 90% of hazards can be resolved by observing the environment in advance and avoiding conflict areas.