Many years ago I happened to go to China on Air China (and many of it's subsids). I only had problems with the Tupelovs that China Northern flew........Hotter than hades in those planes. Also flew on Zhingziang(sp)airlines as our original China Southern plane never arrived to pick us up .I remember thinking that they have a lot of planes just sitting around.........Service on any of them was, well , interesting! Hot beer and hats as souveniers ! I'm sure things have changed dramatically though............as when I was there last year it was all completely different , have a great trip.......