I Can Farm Monsters Infinitely

Lu Chen transmigrated to a cultivation world and obtained the Infinite Monster Farming System. Once a treasure or monster is marked, it can be refreshed infinitely, over and over again. So Lu Chen farmed precious spirit herbs until they were as common as cabbages. He even revived an enemy again and again, only to kill him and seize his treasures each time. “Argh! Lu Chen, if you have any guts, let me go back! What do you get out of killing me over and over?” Lu Chen chuckled and killed him with another slap. A constantly respawning NPC thought he could defy the heavens? By farming endless monsters for treasure, Lu Chen rose rapidly and looked down upon all creation.