The Great Emperor Returns, and I've Been Invincible for 90,000 Years

【The protagonist’s cultivation must not suffer a single loss. If it does, I’ll flame you! No System, pure invincibility!】After slaying supreme lords, destroying saint emperors, flattening forbidden zones, and living through his ninth life, Li Yan returns to Earth! In this life, all he wants is to live quietly with his nine older sisters, three younger sisters, and the mother who adopted him, make it through his ninth life, and become an immortal amid the mortal world. But he discovers that spiritual qi revival has begun on Earth, and Sacred, Overlord, and Divine physiques are emerging everywhere. Immortal sects from beyond the heavens descend upon Earth, and even a Saint wants to forcibly take him as a disciple! “Becoming this Saint’s disciple is your honor. Get down on your knees!” Bang! Li Yan waves a hand and kills the Saint!