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Lonely tunnel guard always wears a smile

(chinadaily.com.cn)
Updated: 2012-10-31 11:31
Lonely tunnel guard always wears a smile

Li signals to a coming train by holding a yellow flag at the Huangtaishan tunnel of Wan-Gan railway which is located on remote mountains in Wannan region, East China's Anhui province, Oct 30, 2012. [Photo/Xinhua]