Every sad cloud in the world was a story. In ancient times, there was a group of creatures called the God of Sorrow. They had the power of sorrow and could create clouds of sorrow. These clouds floated in the air like they were crying, shrouding the earth in sorrow. The power of the God of Sorrow did not appear by chance, but because they had made mistakes. A long time ago, they had hurt some innocent creatures and caused them to lose their lives, so they were given the power of grief. Every time the Sorrow God created a cloud, they would make a sad sound and spread the power of sorrow in the air. The earth was affected, and everything fell silent. In this world, every sad cloud represents a story, reminding people of their past mistakes and reminding them to cherish life. Therefore, we must learn to be tolerant and not make the same mistake again to make the world a better place.