Centaurs, it must have been long time ago at a time when aviation was new in the country you're referring to. Well things have definitely changed for the better. In the last ten years I have conducted type rating for pilots of ten Asian countries and I didn't find find any cultural traits that overruled or interfered with aircraft procedures. Yes! some of them are sensitive and physical touch even friendly etc is discomforting to them. As Instructors it can become problematic if the ethnic groups are switched. But then it's occupational Hazzard.