The Chinese put much importance on personal relationships. They pay attention to the skills of speaking, try to make others at home, and they enjoy the warm atmosphere. However, when there is a conflict between two groups, usually Chinese in respective group will only strive for their own group, which makes the whole divided. And members in one group will be really nice to others.
There are some differences between Chinese and Americans. Often, Chinese tend to be modest while Americans tend to be straightforward. And in China, things can be shared among close people, but in America, privacy is so important that even the closest friends would like to keep a slight distance.