The following suggestions are for reference only and do not constitute professional training or legal advice. In an emergency, it is vital to protect yourself. The following methods can help you quickly assess the objects in your surroundings that may be used as self-defense tools. However, please be aware that any self-defense behavior is risky. Do not use violence easily. Prioritize escaping and calling the police: 1. Stay calm and highly alert • First, take a deep breath, try to stay calm, and quickly assess the surrounding situation and the attacker's movements. • Observe the overall layout of the incident and identify the available exits and shelters. 2. Quickly scan the environment • Look around and pay attention to objects that are sturdy, moderately heavy, and easy to manipulate, such as chairs, sticks, heavy books, fire extinguishers, or other hard tools. • Pay attention to possible "plug-and-play" tools in the kitchen, office area, or public places: for example, iron utensils (pots, pot handles), sharp objects (scissors, knives), and even water bottles may be useful in critical moments. 3. Assess the nature of the objects • Consider the weight, hardness, and firmness of each object. Ideal objects are usually heavy, hard-structured, and easy to grasp. • Determine whether it has a certain safety distance advantage, which can help you balance the opponent without close combat. 4. Consideration of action and position • Consider establishing a relatively advantageous position to the attacker before using any temporary tools (such as choosing obstacles to block or close to the exit). • If you can buy time or attract others' attention, try to get an advantageous position on the flank or rear, rather than fighting head-on. 5. Comprehensive risk judgment • Confirm whether there is really no other choice. The primary goal of self-defense is to escape from danger, not to cause a bigger conflict. • If conditions permit, call the police and seek help first. In most cases, escaping is safer than fighting with force. 6. Reminders for psychological and practical training • Quick judgment in emergencies depends not only on on-site observation, but also on past training and experience. Receiving professional self-defense skills or participating in safety training can often improve emergency response capabilities. • Being sensitive to the surrounding environment and emergency awareness at all times will help you make quick decisions in times of crisis; but remember to avoid making wrong judgments due to panic. In summary, in an emergency, rapid assessment of environmental items as potential defensive tools requires rapid observation and judgment of the practicality and safety of the items, while assessing the distance and position between oneself and the attacker. Different environments and situations require different strategies, but the primary goal should always be to protect one's own safety and quickly escape from danger. If possible, it is a safer option to quickly contact the police or seek help from others.