In the Taihang Mountains, 13 railway workers brave cliffs to clear loose rocks and ensure trains pass safely through the rugged terrain. The Shitai Railway, linking Shijiazhuang in Hebei Province and Taiyuan in Shanxi Province, is a key transport route for Shanxi's coal. As winter approaches and traffic peaks, these "mountain sweepers" remove weathered rocks loosened by rain to prevent landslides and falling debris. Their tireless work keeps one of China's vital rail lifelines secure and running smoothly.