Why do asian people tend to stay to people in their own culture ?

i'm just curious, is it because they feel rejected by the americans? or becase any other reason? i think it is literally time for everyone to start getting along! despite our culture differences! the only time i usually see asains is when i used to get my nails done, or my clothes tailored or went to eat chinese, or japanese///now my husbaned is mexican and my best friends are black, and indian so i want to get to know more people!!!