I Have a Chaos Bead

I have a bead with a very cool name, called Chaos Bead, and there is a small world inside it. Originally, I wanted to use it to farm and raise pets, and live a simple life. However, this world doesn't allow it. There are ferocious beasts everywhere outside, attacking human cities at every turn. Forget the ferocious beasts, there are also Zerg and alien races. Anyway, this is the law of the jungle. If you don't have the strength, you are the *. If you have the strength, you are the king. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.