Beast Invasion: My House Is Bound to the System

When I woke up, Wang Lei traveled through time! Travel to a world where ferocious beasts are rampant. Fortunately, there is a system that is essential for time travellers. So what if the extraction range is limited to the house. The books in my study are enough. Wang Lei: "System, I want to extract it." System: "Congratulations to the host, you have extracted the Super Saiyan transformation." Wang Lei: "Beautiful, am I invincible at the beginning?" Newbies with new books, if you have any suggestions, you can share them in the comment area. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.