Bridge and tunnel workers dredge the sewerage system of the Wubao Tunnel on the railway linking Taiyuan of north China's Shanxi Province and Zhongwei of northwest China's Ningxia Hui Autonomous Region, Jan. 20, 2022. Workers maintain the sewerage system of the Taiyuan-Zhongwei railway to ensure the transportation safety as Spring Festival travel rush begins. (Xinhua/Yang Chenguang)
Bridge and tunnel workers are on a task to drege the sewerage system of the Wubao Tunnel on the railway linking Taiyuan of north China's Shanxi Province and Zhongwei of northwest China's Ningxia Hui Autonomous Region, Jan. 19, 2022. Workers maintain the sewerage system of the Taiyuan-Zhongwei railway to ensure the transportation safety as Spring Festival travel rush begins. (Xinhua/Yang Chenguang)
Bridge and tunnel workers wait for a train to pass the Wubao Tunnel on the railway linking Taiyuan of north China's Shanxi Province and Zhongwei of northwest China's Ningxia Hui Autonomous Region, Jan. 20, 2022. Workers maintain the sewerage system of the Taiyuan-Zhongwei railway to ensure the transportation safety as Spring Festival travel rush begins. (Xinhua/Yang Chenguang)
Bridge and tunnel workers are about to dredge the sewerage system of the Wubao Tunnel on the railway linking Taiyuan of north China's Shanxi Province and Zhongwei of northwest China's Ningxia Hui Autonomous Region, Jan. 19, 2022. Workers maintain the sewerage system of the Taiyuan-Zhongwei railway to ensure the transportation safety as Spring Festival travel rush begins. (Xinhua/Yang Chenguang)
Bridge and tunnel workers discuss the plan to dredge the sewerage system of the Wubao Tunnel on the railway linking Taiyuan of north China's Shanxi Province and Zhongwei of northwest China's Ningxia Hui Autonomous Region, Jan. 19, 2022. Workers maintain the sewerage system of the Taiyuan-Zhongwei railway to ensure the transportation safety as Spring Festival travel rush begins. (Xinhua/Yang Chenguang)
Bridge and tunnel workers dredge the sewerage system of the Wubao Tunnel on the railway linking Taiyuan of north China's Shanxi Province and Zhongwei of northwest China's Ningxia Hui Autonomous Region, Jan. 20, 2022. Workers maintain the sewerage system of the Taiyuan-Zhongwei railway to ensure the transportation safety as Spring Festival travel rush begins. (Xinhua/Yang Chenguang)
