Just saying that one thing you may think trivial, will never be forgotten. I recall a place I was teaching where I somehow slighted the girl responsible for the admin of the students, or the counsellor, memory a bit hazy...end of the college year came along, no send off dinner, no goodbye, thank you very much, just left to go on my merry way, which wasn't a problem, I'm independent and don't care for their validation...but it did set me thinking as to the group culture, and how if you offend one chinese person no matter how indirectly or even over a trivial thing, it blows up into you VS them...one reason I can never feel at home in such a place, and I hear South Korea and Japan are worse, unless anyone can comment otherwise?!