An undated photo shows Zhao Wenwu working in Dalian, Northeast China's Liaoning province. (Photo provided to chinadaily.com.cn)
He walks for hours on cables that are 100 meters above the ground in scorching heat and freezing winter in gear that weighs two kilograms. And these are not some ordinary cables. They carry high-voltage electricity.
Meet Zhao Wenwu, an electric power transmission worker at Dalian Power Supply Company subordinated to State Grid Corporation.
"I have to make sure that not a single mistake happens, because if it does, it means someone could lose their life," said Zhao.
Zhao, 48, has worked as a "doctor" fixing malfunctioning high-voltage and extra-high-voltage cables for 28 years.
He now leads a seven-member team responsible for detecting and overhauling 153 cables, totaling 1,300 kilometers, that transmit electricity for Dalian, a city with nearly seven million population in Northeast China's Liaoning province.
Facing flowing high-voltage electricity and variable weather while staying on high cables, which range from 20 to 100 meters high for different voltages, in the air for hours, Zhao has one of the most dangerous and demanding jobs in the power sector.
A typical working day for Zhao and his teammates starts like this:
Carrying several kilograms of tools and equipment, they walk several kilometers in the wild and reach the foot of a transmission tower.