Troops save lives on ‘roof of the world’

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Maintenance workers paint signs on the road in Chamdo. (KUANG LINHUA/CHINA DAILY)

Troops save lives on ‘roof of the world’

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Mo Wei (left), an officer responsible for maintaining a section of National Highway 318 in Pashoi county, Chamdo city, Tibet autonomous region, shows a new recruit how to fill cracks with asphalt. (ZHANG YANGFEI/CHINA DAILY)

Troops save lives on ‘roof of the world’

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The 72 switchbacks that zigzag sharply through the Chamdo section of National Highway 318. (ZHANG YANGFEI/CHINA DAILY)

Troops save lives on ‘roof of the world’

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Workers maintain a 40-kilometer section of road in the Tangula Mountains, the highest point of the Qinghai-Tibet Highway. (LIU DONGJUN/XINHUA)

Troops save lives on ‘roof of the world’

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Officers seal a section of the Qinghai-Tibet Highway. (GUO QIUDA/XINHUA)