Staff members of China Railway No.10 Bureau Group work at Huangtai Station of Qingdao-Jinan railway in Jinan, east China's Shandong Province, April 12, 2021. After six hours of construction, more than 1,000 workers from China Railway No.10 Bureau Group on Monday morning completed the upgrade of Huangtai Station connecting two railway lines linking Qingdao and Jinan. (Xinhua/Guo Xulei)