As you know, in some Asian countries all it takes is one unconscious act (ehem, mistake) to appear culturally insensitive, insult someone, or lose a friendly or business relationship altogether.  I’m from California and have resided and worked as an expat in Spain, India, mainland China, Hong Kong, and briefly in Bali so suffice it to say that I’ve made a fair share of (luckily, non-catastrophic!) cultural blunders over the years.