Photo taken on June 27, 2018 shows the inside scene of the Ban Nakok Tunnel in northern Laos' Oudomxay Province. Ban Nakok Tunnel of China-Laos railway, constructed by China Railway Guangzhou Engineering Group Co., Ltd, has broken through over 1,000 meters on Wednesday. (Xinhua/Liu Ailun)
Inside Ban Nakok Tunnel of China-Laos railway
Source: Xinhua| 2018-06-28 12:05:52|Editor: ZD
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