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Li Xiaoran, the world's top hardware R&D engineer, died and was reduced to the underworld to repair computers. In order to be reincarnated as soon as possible, he made full use of his professional expertise. Not only did he become the first brother in electronic product repair in the underworld, he also became brothers with the soul-locking envoy in white, and learned the secret soul-destroying fist of the underworld. And because he repaired the judge's chat phone in time, the judge secretly gave him the power of clairvoyance and photographic memory, and promised him a free reincarnation. Let's see how Li Xiaoran pretends to be a pig and eats a tiger after his rebirth, how he scares foreigners with supernatural powers, how he builds the underworld and destroys the immortal palace, and how he cultivates and becomes a saint...