Given a travel related situation, and given a specific question about the situation, summarize the question into a title

[EX Q]: Two days ago I flew with KLM from Calgary to Germany, first with the "Dreamliner" 787 and then with the 737 in economy class. I had the impression (due to my impaired space during eating on the 787) that the seats in the 787 are narrower than in the 737.

Is this true or just my imagination?
With the distance between the seat rows I am not so sure. Maybe reduced too?

[EX A]: Are the Seats in the Boeing 787 narrower than in the 737 in KLM Airlines?

[EX Q]: My question is inspired by this one: Japanese etiquette: Most common (and offensive) mistakes? Which made me think about my upcoming trip to China. 

As a Dutch citizen, I have experienced a lot that what we consider normal behavior, is considered rude or absolutely not-done, in other, even bordering, European countries. I've not been in Asia before, but I am prepared to try to adjust to the local customs as much as possible, and I think there is a lot that can be done wrong.

I've read the linked question with great interest, but I wonder to what degree these answers will actually apply to China? 

For example, I recently learned that when toasting, you show respect by keeping your glass lower than the other.

[EX A]: Chinese etiquette: Most common mistakes

[EX Q]: I noticed that my flight going east to west took almost an hour longer than when coming back from west to east in continental US. What is the reason for this?

[EX A]:
Why is a flight going west longer than the same flight going west to east?