Since 1990s, cultural criticism and cultural studies have become the richest and most controversial fields in the postmodern context of western cultural and literary theorists, and the importance of "culture" now exceeds any period in history. Huntington predicted at the beginning of his long paper "The Clash of Civilizations": "I think the root of the conflict in the new world will no longer focus on ideology or economy, but culture will be the main source that completely divides mankind and causes conflicts. In world affairs, nation-states claim to play an important role, but major conflicts in global politics will occur between ethnic groups of different cultures. The conflict of civilizations will affect global politics, and the fault line between civilizations will become a front. "