# China–Vietnam

Scaling Karst Cliffs to Keep Cross‑Border Trains Running: Inside China’s ‘Climbing Tiger’ Rail Crew

A specialised maintenance team on China’s Xianggui railway routinely climbs karst cliffs to identify and neutralise hazardous rocks that threaten China–Vietnam international rail traffic. Their work combines drone and AI detection with dangerous manual interventions, and underlines the human backbone of infrastructure resilience amid growing reliance on cross‑border rail links.