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Line 7 of Chengdu metro system begins trail operation

CHINA-SICHUAN-CHENGDU-NEW METRO LINE (CN)

Passengers take pictures on a train running on Line 7 of the metro system in Chengdu, capital of southwest China's Sichuan Province, Dec. 6, 2017. Line 7 of Chengdu metro system began its trail operation here Wednesday. (Xinhua/Zhang Fan)

[ Editor: zyq ]