Why do people in Sanya and Northeast China spray each other, and Hong Kong and the Mainland spray each other?

You don't have to go too far, and you can even push it to quality and social atmosphere. Tokyo people in Japan look down on Kansai people in Osaka, and the British natives and Irish people are at odds. New york in the United States calls Los Angeles a hillbilly. As far as China is concerned, it is largely due to interests. Sanya people have benefited a lot from the tourism industry. They are worried that the accusations from the Northeast will hit the interests of the tourism industry, and more and more mainlanders are pouring into Hong Kong, squeezing the interests and resources of Hong Kong people. At first, it was actually a case, but later it was magnified by the media, and the onlookers also projected the injustice and unsatisfactory emotions they experienced on weekdays. Of course, there is also a complex of defending the land caused by the region, because the areas formed by the custom accent are relatively closed and naturally easy to unite. In fact, there are good people and bad people everywhere.