Why do many people have prejudice against Xuzhou?

As a Xuzhou person. To be fair, those who are biased against Xuzhou people. Please be clear, don't damage the whole Xuzhou for personal reasons! At the same time, I also hope that those fellow villagers will not discredit their families.

From ancient times to the present, how many chivalrous men have emerged in Xuzhou, although this spirit sometimes suffers a little. I hope everyone will carry forward this spirit in Xuzhou! Let the people who hurt us in Xuzhou see what kind of men we are in Xuzhou!