When setting traps against invading forces in mountainous environments, it is necessary to make full use of terrain and vegetation features to achieve maximum concealment. Here are some strategies: 1. **Terrain Utilization**: Use natural barriers such as cliffs, canyons, and dense forests to place traps in narrow paths that the enemy has to pass through or in places where it is easy to stumble. 2. **Vegetation Camouflage**: Collect and use vegetation and rocks in the surrounding environment to camouflage traps so that they blend in with the surrounding environment and are difficult to detect. 3. **Silent Traps**: Choose traps that are triggered silently, such as rotating traps or tripwire traps. These devices will not make a sound to warn the enemy when triggered. 4. **Obstacles and Hysteresis Traps**: Set physical obstacles such as fallen trees and rolling stones to slow the enemy's movement, making other traps more effective. 5. **Bait Strategy**: Use false targets or bait to guide the enemy into the preset trap area to reduce the chance of direct detection. 6. **Night Installation and Maintenance**: Set and maintain traps under the cover of night to reduce the chance of enemy reconnaissance. 7. **Multiple-point deployment**: Design multiple trap lines and camouflage locations to prevent the enemy from evading other traps after discovering one trap. 8. **Real-time monitoring**: If possible, use drones or observation posts for real-time monitoring to adjust trap strategies at any time. 9. **Escape path**: Design a safe retreat path to prevent your personnel from accidentally falling into the trap and to leave the trap setting area unimpeded. Make sure not to set traps that pose a threat to civilians or non-combatants, and follow the laws and ethics of war.