Lhasa West Station sits at an altitude of 3,662 meters, where the sun beats down relentlessly on the plateau. Freight trains shuttle back and forth through the station, and the muffled clang of couplers echoes across the vast rail yard.

Wujin Ciren stands beside the tracks, his eyes fixed on the shunting crew working nearby. The busy shunting team members are using their hands to "thread the needle," marshaling and breaking up railcars loaded with construction materials and daily supplies. A single misstep could lead to unimaginable consequences.

Wujin Ciren comes from Shannan, Xizang, and serves as a shunting instructor at Lhasa West Station. With nearly 20 years on the job, no improper move or hidden hazard escapes his eyes. Years of exposure to wind and sun have left his face deeply tanned, with faint wrinkles at the corners of his eyes.

His colleagues privately call him "Black Justice Bao" — a nickname derived from the legendary black-faced, iron-willed judge in Chinese folklore. At first, it was because they were "afraid of his stern face." Over time, it evolved into "admiration for his strict management." "Managing shunting safety requires being the 'bad guy.' The darker my face and the stricter I am now, the more I'm taking responsibility for everyone's lives and safety," is a saying Wujin Ciren often repeats.

In recent years, many newcomers have joined the workshop, and Wujin Ciren patiently teaches them hand by hand. He doesn't deal in empty talk — he transforms dry safety regulations into vivid accident scenarios, turning newcomers from "fearing him" to "admiring him." Under his influence, the entire shunting team has developed a rigorous and conscientious work ethic.

This National Day, Lhasa West Station handled an average of 385 railcars per day. For him, the more it's a holiday, the more he needs to keep his eyes wide open. "Every single shunting operation is tied to the safe and smooth operation of railway transport during the National Day holiday." His daily routine includes checking safety measures item by item before the shift, watching every move of every person during the shift, and organizing everyone after the shift to review recorder footage frame by frame to identify problems.

Along the Qinghai-Xizang Railway, which averages over 4,000 meters in altitude, there are many railway workers like Wujin Ciren. Dressed in blue uniforms, under the scorching sun, in the biting cold wind, and during every shift with no audience, they weave the word "safety" coupling by coupling into every train.

Reporter: Xu Yuyao, Jin Yaoxun

Translator: Liu Fang

First Review: Panlu

Second Review: Drakpa Wangchen

Third Review: Hu Rongguo