Doomsday Monster Killing! I Can Copy Materials a Hundred Times!

[System + Doomsday + No Virgin + There is a female protagonist] The end is coming! Mountains and rivers are broken! Order collapses! All kinds of creatures mutate! Xia Yuan gets the system! Not only can you level up by killing monsters, but you can also explode supplies! Every level up! You can also get additional rewards! Surprises keep coming! What surprised Xia Yuan the most was that the materials he obtained could be copied a hundred times, making him unable to finish them all. "Lick the dog!" "I'm going to be a bitch! Whoever wants to be a bitch can be a bitch! I don't want to serve you anymore."