The Copy-Paste System

Fang Yuan was reincarnated in the world of martial arts & cultivation with a Copy-Paste system! It allows him to scan the atomic structure of anything and paste an exact copy provided he has sufficient energy. He can copy-paste the most expensive pill created by a master alchemist for dirt cheap. He can copy-paste magic artifacts, natural treasures, and even living beings! If he copy-pastes the brain of a venerable, can he extract all his knowledge and uncover the secrets to immortality?