Yang Fadeng leads a specialized team of railway workers in southern China's Guangxi Zhuang Autonomous Region; they are tasked with securing dangerous rocks along railway lines. In the region's karst landscape, weathering causes frequent rockfalls that threaten rail safety. The team scales nearly vertical cliffs with 20 kilograms of gear to assess and remove hazards. Yang's 8-year-old daughter sometimes joins him, drawing pictures and giving him flowers after his hard work. Every day, the team members risk their lives to ensure trains run safely, protecting countless passengers.