Fight MU700 of China Eastern Airlines returns after carrying out a test flight under circumstance of low visibility at Beijing Capital International Airport in Beijing, capital of China, Sept. 8, 2017. The airport succeeded in a test fly under circumstance of 150 meter of Runway Visual Range (RVR) with Head Up Display (HUD) on Friday. The technology is expected to promote planes to take off under the circumstance of low visibility. (Xinhua/Xing Guangli)
