The Story of Cultivating Immortality Like Falling into the Mortal World

The story begins with a magical token. Three hundred years of promise, three hundred years of missing, and three hundred years of searching. The world is falling apart! ! I actually met Xiao Bailong, and she liked me very much... Falling in love while cultivating immortality, it felt so romantic. But the demon king actually tied me up and put a light lock on me... I accidentally saved all mankind, how should I write this merit book...