I had to take this airline from Shanghai to BKK and it was the worst flight ever. I swear this plane was built decades ago but hadn't been revamped since the 80s. It had one central TV on the front bulkhead and it only showed Chinese infomercials. The meal consisted of prepacked snacks which doesn't sound bad until you realize onion flavored cookies, yes onion, and pickled turnips don't make for good snacking.
The worst bit was all the Chinese people on the place were rude and loud. It was 10PM and usually people are quiet and sleeping on a night flight in the US. Since many of these people had never flown before they were all talkative and rowdy. Yelling to friends several rows away and getting up constantly.
Now I know where Monty Python comes from because I swear it was like a flying circus. If I was supposed to die on a plane, that was it.
Note: Even on an international transfer; in Shanghai you have to deboard, get your luggage, go through customs, and recheck all your luggage on the next flight. Pay the extra and skip China as a layover.