Here in China there are two different set of criteria for both parties: Chinese and foreigners. Once my FAO at a school took me out drinking. We were both drunk when we arrive home. A few days later, he went up to me and told me "I heard you came home." The door man told him. When I reminded him that he was the one that invited me out and that we both got drunk together, he just smiled and started laughing. I now work at a new school, and I don't go out for a drink with any teacher now. I do more things on my own now without the company of fellow teachers- no point.