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Chinese electricians do maintenance work in Kunming, Southwest China's Yunnan Province, on May 31, 2020.
They scale towers and walk on power lines 400 meters above the Jinsha River, the upper reaches of the Yangtze River.
The 1,250-meter-long power lines cross the river at a 45-degree angle.
It took three workers three hours to finish the maintenance work.
(Produced by Zhang Qiwei and Huang Jingjing; Video source: pear video)
