I Wandered and Became the Great Immortal Emperor

When Yang Taisan traveled to a modern world of immortal cultivation, he discovered that he didn't even have spiritual roots! In this world where mana is needed everywhere, he has nothing and is forced to live a miserable life of wandering. Until one day, Yang Taisan found a copy of "The Map of Ten Thousand Realms" in the trash can, and he discovered that he could temporarily reach the world in it, and it was an extremely advanced world of cultivating immortals. People there throw away hundred-year elixirs as rubbish, thousand-year artifacts as scraps, and ten-thousand-year exercises as waste paper... Hahaha! Yang Taisan picked it up, pick it up quickly, then use it in the original world...