In Buddhism, the World of Sakyamuni referred to a virtual world filled with all kinds of troubles and suffering, also known as the "Impermanence World". The Swirling World was a flat world formed by two mutually vertical mountain ranges and an ocean. In the middle of it was a small island called the Swirling Island. The Swirling World's terrain was rugged and dangerous, filled with all kinds of natural disasters such as earthquakes, tsunamis, landslides, fires, etc. It was also filled with all kinds of demons and devils. People would encounter all kinds of demons and diseases here, so it was also called the "World of Suffering". In Buddhism, the Saha World was considered a stage that one must go through in the long process of cultivation and release. In this world, people must experience all kinds of hardships and challenges to overcome their own troubles and eliminate their inner stubbornness to finally reach the state of Nirvana.