I flew with China Southern Airlines from Tehran to Beijing with one hour stop in Urumqi. I let made a transit visa in Urumqi to avoid touching the entries of my Chinese Visa. This is actually useless, since my visa –made in Germany in April– will expire before I get into China a second time.
I had more time to wait in Beijing for my flight to Ulan Bator, about 8 hours. I first change from Terminal 2 to Terminal 3. This new terminal opened before the Olympics in 2008 is impressively huge (second biggest in the world after Dubai). But there is no much space just to sit for hours, so I went to a restaurant, where I finally found an electrical source for my laptop. I spent most of these hours working on my pictures. As I saw last year in Atlanta (the busiest airport in the world, or maybe Beijing is just getting this title), you go to the gates via an automated train. However, the security check for the hand luggage is close to the gate in this terminal 3E, while it is close to the main building in Atlanta.
I slept almost continuously in the plane between Beijing and Ulaan Baatar, operated by MIAT Mongolian Airlines.