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"Five years ago, he left home with a monkey and trekked up mountains and rivers to Fangcun Mountain. Five years ago, he accompanied a girl and sang under the moon. ... Five years later, the monkey caused trouble in the Heavenly Palace. He resisted the gods and Buddhas in the sky, just to leave the monkey with a chance of survival!

In 3000, a sudden black rain changed the entire world. As the protagonist, Yi Yang accidentally obtained the system of cultivating immortals after being unfortunately infected...