Qian Fuwang and Wang Xinling, a couple of tunnel workers in Taiyuan city, north China's Shanxi province, have been breaking ice that is inside tunnels for nearly 30 years to keep train safty.
Qian Fuwang and Wang Xinling, a couple of tunnel workers in Taiyuan city, north China's Shanxi province, have been breaking ice that is inside tunnels for nearly 30 years to keep train safty.