精品视频一区二区三区四区,97国产色,国产深夜视频,午夜男人网站,成人99视频,成人1区2区3区,91精品国产成人观看

New railway linked to Beijing's new airport starts joint test

Source: Xinhua| 2019-08-10 16:25:40|Editor: huaxia
Video PlayerClose

A new railway linked to Beijing's new international airport starts a joint test. The line is expected to be put into trial operation next month. #AmazingChina

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011102121382988121