Chinese indiviudals tend to identify themselves as part of a specific group, team, or unit, and an important distinction is made between "insiders"and "outsiders". In class, the professor sites an example of the follows: horizontal coorperation tends to be lacking in Chinese organizations because the other group is outside the family/group network.
I understand that eveybody needs the sense of belongings. This is much better explained how come Chinese or other oversea students in U.S. tend to gather together and form their own social group rather than mingle with local students. One reason is that the communication among insiders is much more personal and open; the other one is because we feel more secure hanging out with the people who share the same cutlure.