Air China restarted direct flights between Beijing and Pyongyang on Monday after a six-year hiatus, another sign North Korea is gradually opening up following the resumption of train services between the capitals. Flight CA121 departed Beijing Capital Airport at 7:58 a.m. (6:58 a.m. Hanoi time), according to FlightStats data, and arrived at Pyongyang's Sunan International Airport at 10:37 a.m. (8.37 a.m.). An Air China plane is seen at the international airport in Beijing, Ch