At just nine years old, Wang Zheng possesses an inferior spiritual root and is trapped in the treacherous Myriad Demons Grotto. He should have been nothing more than expendable cannon fodder at the very bottom of the cultivation world. But in this brutal battlefield, where people kill and destroy all in pursuit of immortality and every step could be their last, he discovers a glimmer of hope. As long as he has spirit stones, he can replicate and perfectly repair anything, from top-grade medicinal pills and superior talismans to peerless magical artifacts! Mediocre aptitude? He'll eat medicinal pills like ordinary meals! Surrounded by powerful enemies? He'll wield piles of magical artifacts to defeat opponents above his cultivation level! This is a ruthless struggle for survival in a world where the strong prey on the weak. Witness how a lowly slave cultivator, armed with an ordinary mortal body and absolute cold-blooded rationality, fights his way through the dark and merciless path of immortality to carve out an extraordinary road to eternal life!