I'm Actually a Cultivation Bigshot

Li Nianfan transmigrated to an immortal cultivation world as a mortal. Knowing that he could never become a cultivator, he decided to live an ordinary life. But unbeknownst to him, the dog he adopted became a mighty demon king, the tree he planted became the World Tree, and a passerby he met became a Taoist sage. Now, everyone believes he is an all-powerful cultivation bigshot, but he's just trying to live a peaceful life.