Japanese Culture

Since I had experienced a study abroad,I found cultures which only japanese people has.Some are very proudable,but some are not. The one I proud of is that Japanese people (especially workers at shops) give great hospitality to customers. When I shoped in one country, woman who work at that store suddenly changed to a cold attide right　after she see me not buying anything. On the other hand, in Japan, even though I leave a store withough any purchase, they don't change their face. They treat me in same way as people who actually bought something. This is one of Japanese culture that I like. However,our culture have bad parts as well.of course. The one I can think of it that we try to hide our feeling and don't speak out own opinions. (going too far is not good and it need to be moderate though...) If they don't say what's on their mind, others cannot know that they are thinking.