Thanks for your informative responce. You have covered all the angles. I knew about what you have said from the experiense of my big brother. He had come to China on an L visa at first to work for a private training center. As he was not good at being a children's entertainer, he was abruptly fired. The last thing a private training center boss wants is to pay a foreigner for losing them money by causing new students not to enrol there. But if you are a real good teacher, you can make pots of money working there. The down sides are you'll be very busy, and your job security will always be in doubt, dependant perhaps on as short a time as your previous week's classroom performance. Another negetive is if you're fired in the middle of a semester, you'll be toiling to find another job, as there are few availible then. My big brother got a good teacher rating by being generous to his new employer. He gave him two bottles of whiskey and a box of Havanas as soon as he arrived there. Luckily, his firing was early enough for him to contact a local agent to get him an alternate job in a hurry, luckily for him in a senior high school in the same city. Private training centers should be sidestept by all those who are not natural entertainers and teachers at the same time, and are not workaholics.