High-speed train electrician dedicates herself to perfection

Yao Zhihui works at CRRC Changchun Railway Vehicles, a high-speed train manufacturer based in Northeast China's Jilin province. "To accurately strip the wire insulation, I practiced over 200 times every day, and my fingers became callused," she said. Yao discovered during inspections in 2018 that despite having uniform wiring standards, the execution varied among workers - some wire ends had burrs, some wire coils were twisted. "These issues might seem minor on the surface, but they posed safety hazards for train operations," she said.