The High Wall of the Internet: New Border Conflicts and Cultural Conflicts

It has been said that the Internet has no borders and creates an ideal and equal world, but it seems that the walls of the current Internet are higher than ever due to culture and civilization. The wall is in the country and at the same time crosses national borders. So why was this wall created? And what kind of wall is formed? Readers can explore the newly emerging net wall by reading various overseas cases.