C807 cave(4)

It was not easy to cultivate this kind of Gu worm, and it was also extremely cruel.

The first thing to do is to implant thousands of eggs into the newborn mouse.

As the mice grow older, these Gu worm will also hatch. After the Gu worm hatches, it will eat the mouse. Once the Gu worm had eaten enough rats, it would be able to implant these Gu worm into the bodies of other animals