Because Hades was dissatisfied that Persephone only stayed in Hades for a hundred days a year, he tampered with the carriage made by Persephone one day so that she could not return to her natal home. But Persephone found out and was so angry that she immediately ran back to her parents' home and never came back. So Hades, the king of Hades, came up with the idea of freezing the earth for a year or two so that the Queen of Hades, who was inseparable from flowers and plants, could come back. However, due to the obstruction of the younger generation (Athena), everything turned into a holy war.