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The fantasy world is invaded, awaken the analytical eye, defeat monsters and get rid of the skills, and all people practice together to resist the catastrophe.

I am a weasel who has become a spirit through cultivation, and accidentally traveled to a different world where demons are rampant. Originally he just wanted to live a stable life, but because of his kind thoughts, he was sincerely worshiped by a village of mortals. When the tiger demon slaughtered the village, I fought for my life with my demon body and shouted the words that have been passed down through the ages: "Fellow, do you think I look like a human or a god?" The whole village roared: Emperor Zhenwu! The next second, the Nine Heavens Demon Demon Patriarch descended from the sky and wiped out all the evil spirits with one sword! So what about demons? As long as I want to protect someone, Lian Tian can be my backer!

The protagonist accidentally obtains the original seed, which can take him to infinite reincarnations in the world. In the ordinary world, he can obtain endless knowledge, and in the extraordinary world, he can obtain the original seeds of the system, such as Harry Potter's magic, Naruto's chakra, etc., And finally become an immortal and return to his clan.