Some thoughts about culture

Well,as a university student,I really can feel that the culture in this world in colorful.In Macao,I have met lots of people,they come from different regions in China,or even from different countries.I feel happy to meet so many friendly people,they teach me a lot!
But I also find something not very well.
Because we all have our own mother-region,and some of us are not interest in the world outside,so when they see the people they think is stupid(I really don't know why they have this kind of feeling,maybe from TV or something else),they will say:"uh...........,how foolish the north people/forgieners........."Well,they are surely not say that in front of them.
I am a happy student,I do not have this feeling anytime,and this suitation really made me sad.Why you guys can feel that the people in your region is the best?Why you guys only can judge others from TV or the reports on newspapers?In my opinion,the people have this feeling is really fool!!c
After that, I suddenly figure out that it is caused by circluateless cultural system,Oh,yes!I am luckly that I choose the right major to solve this problem.We can use tourism to spread different culture to all over the world.By special events,by cultural tourism,also can use media methods.
In one world,if we can sufficiently spread the culture to the world,then the people in the world will familiar with each other,there will be no conflicts,no wars.The human being will be united as a overall!What a nice world it is!!I will do my best to contribute to this goal,maybe I can't see this ,but I will also feel proud as a man-kind!