亚洲精品1234,久久久久亚洲国产,最新久久免费视频,我要看一级黄,久久久性色精品国产免费观看,中文字幕久久一区二区三区,久草中文网

Home / China / Now and Then

Dramatic changes for Chinese miners in the last 30 years

(chinadaily.com.cn) Updated: 2015-03-23 06:27 Comments

Dramatic changes for Chinese miners in the last 30 years

[Security] The emergency chamber hundreds of meters underground was equipped with oxygen, food and drinking water at Shandong Energy Feicheng Mining Group, Oct, 2013. If anything happens, the miners can survive for half a month in this chamber. [Photo/news.qq.com]

Most Popular
...