Return Elixir Since Childhood to Build a Top Sect

There are billions of worlds in this universe, divided into small worlds, medium worlds, large worlds, and metaworlds. After traveling through time, Li Yi bound to the 'sale and return' system. Whether it is elixirs, exercises, magic weapons, or secrets, as long as they are sold, they can get a return gift package, and the more sold, the greater the return limit. "Ding, sell one small pill, return five pills." "Ding, sell one hundred small pills and get one thousand, two hundred pills back!" … "Ding, if you sell the first three levels of Qian Juanyun Footwork, you will get a copy of the similar footwork Chasing Wind Step." "Ding, sell one medium-grade magic weapon, Fire Cloud Cauldron, and return three top-grade Fire Cloud Cauldrons!" … As a result, Li Yi gradually cultivated Xiao Huanzong from a small world into a top sect above all realms! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.