[Fantasy/Oriental Fantasy/Time Travel/Slap in the Face/Imagination/Single Female Protagonist] The male cultivators are only equipped with a potion-washing furnace, while the female cultivators have to take back even the waste elixir dregs to feed the dogs. The handyman Chen Yan refused to accept it. Why? Then he picked up a furnace of waste residue, purified, quantified, and controlled experiments, and turned the ten thousand years of metaphysics and alchemy into an assembly line. The Alchemy Palace said that he stole the alchemy recipe. He dusted his sleeves: First, make a comparison, and then tell me whether I copied it or not.