@__vaha__: 🏔️ Beneath the surface of China lies one of the world’s largest underground military infrastructure networks. In this video, we explore the history behind these underground facilities, the engineering concepts used to protect strategic sites, and how such complexes have evolved over time. We also examine publicly available information, international assessments, and the broader role these facilities play in modern strategic deterrence. This video is intended for educational and informational purposes only, based on publicly available sources, and does not provide operational or military guidance. #china #History #technology #facts #Science

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Monday 20 July 2026 12:00:00 GMT