HI, I worked in the Hunan Provence of china for about 12 months, The Chinese although sometimes shy at first,are very friendly and lovely people. But just expect to be told what you want to hear, as even if they don't know they will tell you something so as to "SAVE FACE" (Embarassment), and they smile when they are happy and they smile or grin when they are nervous or worried.So if you can get over being smiled at when your angry it could be because they're nervous. And don't embarrass them in front of others, if you have a problem deal one on one and in the line of command (of course). I loved china and would love to work there again.