After My Grandfather's Dream, I Control All Realms Through a Ring

Lin Xiao has experienced the full bitterness of the working class, crushed breathless by reality until his girlfriend's betrayal becomes the final straw. Then, his deceased grandfather appears to him in a dream: "Unfilial grandson, you've finally broken up with that little hussy! Why aren't you burning paper money for me yet? Grandpa left a treasure for you on top of his grave!" A spatial ring? Access to ten thousand realms? The ability to trade resources across boundaries? In a post-apocalyptic world, a single bowl of water can be exchanged for hundreds of taels of gold. In the realm of cultivation, ordinary fruit can be traded for supreme cultivation techniques. Lin Xiao has finally stood back up. His ex-girlfriend begs on her knees for a reconciliation? It's too late! The once-popular campus belle actively pursues him, a seductive post-apocalyptic warlord kneels to pledge her loyalty, and a holy maiden from a cultivation sect acts spoiled, begging to be kept by him. Why would he ever want his worthless ex back?