Photo taken on Dec 25 of 2016 shows the entrance to the Jinji Guan No.2 tunnel. [Photo/Xinhua] At the beginning of 2017, 26 bridges and seven tunnels between Chengdu Plain and Ya'an City were under busy construction. The Sichuan-Tibet Railway is extending from Sichuan to the Qinghai-Tibet Plateau. The 1,900-kilometer railway starts from Chengdu, goes through Ya'an, Garze, Chamdo and Nyingch, and finally arrives at Lhasa.[Photo/Xinhua]

Photo taken on Dec 25 of 2016 shows that a railway bridge on the Qinghai-Tibet Railway is under construction in Ya'an. [Photo/Xinhua] At the beginning of 2017, 26 bridges and seven tunnels between Chengdu Plain and Ya’an City were under busy construction. The Sichuan-Tibet Railway is extending from Sichuan to the Qinghai-Tibet Plateau. The 1,900-kilometer railway starts from Chengdu, goes through Ya'an, Garze, Chamdo and Nyingch, and finally arrives at Lhasa.[Photo/Xinhua]

Photo taken on Dec 25 of 2016 shows that workers are busy with their work in Jinji Guan No.2 tunnel. [Photo/Xinhua] At the beginning of 2017, 26 bridges and seven tunnels between Chengdu Plain and Ya’an City were under busy construction. The Sichuan-Tibet Railway is extending from Sichuan to the Qinghai-Tibet Plateau. The 1,900-kilometer railway starts from Chengdu, goes through Ya'an, Garze, Chamdo and Nyingch, and finally arrives at Lhasa.[Photo/Xinhua]