Maybe Not That Popular Transformation System

Lingan time travel... Forget it, this part is so boring. All in all, he got a system. Well, just like other second- and third-rate novels, it is a transformation system. And this system... Doesn't seem to be very popular? The author is a freshman in high school. I am busy with my studies and update every week. If I need to delay, I will tell you in advance. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.