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<p>Chinese electricians do maintenance work in Kunming, Southwest China's Yunnan Province, on May 31, 2020.</p><p>They scale towers and walk on power lines 400 meters above the Jinsha River, the upper reaches of the Yangtze River.</p><p>The 1,250-meter-long power lines cross the river at a 45-degree angle.</p><p>It took three workers three hours to finish the maintenance work.</p><p><span style="color: rgb(127, 127, 127);">(Produced by Zhang Qiwei and Huang Jingjing; Video source: pear video)</span><br/></p><p><br/></p>