“no courtesy what so ever”
I have found that Chinese (presumably the same with Koreans) have courtesy for one another, but none for Westerners. Have you noticed that?
Personally, being in the US college system, which should probably be called the Chinese education system, I am astonished by the lack of manners of the Han people towards Westerners.
I have not been to China, but my experience in Korea was that they all believed they should be first in line. The rules of driving; Largest car has right of way, if you make eye contact, you loose. Japan I found to be totally opposite of Korea. People were courteous to everyone and waited their turn. I found the taxi cabs interesting in that they had white lace starched seat covers and when the driver was waiting for a fare would get out of the cab and wipe the car meticulously.
Sorry about drifting off subject.