In a street fight, using obstacles in your environment for self-defense can help you protect yourself and increase your chances of survival. Here are some tips for quickly finding and using obstacles in your environment: 1. **Observe the environment**: First, try to stay calm and quickly assess your surroundings. Look for walls, pillars, cars, trash cans, trees, etc. that can be used as cover or defense. 2. **Find cover**: Use obstacles around you as cover to enhance your own protection. For example, get close to a wall or car to reduce the area exposed to the attacker's line of sight. 3. **Use height differences**: If there are steps, ramps, or uneven areas nearby, using these height differences can give you a favorable position in front of the attacker and increase your chances of escape or defense. 4. **Use obstacles to block**: If an attacker approaches, you can quickly hide behind an obstacle and use it to block the attack or slow down the opponent. 5. **Use props**: If there are available props nearby (such as rocks, spray bottles, sticks, etc.), you can consider using them as protective tools or throwing objects to increase your own defense capabilities. 6. **Find an escape route**: When assessing the environment, prioritize finding a way out. If you can find a safe escape direction, leave the scene quickly instead of confronting the attacker. 7. **Keep moving**: While using obstacles, keep moving to avoid being surrounded by attackers. Use the characteristics of obstacles to evade and relocate flexibly. Please note that when facing violent conflicts, try to avoid confrontation and find opportunities to leave the scene. In any case, your own safety always comes first.