Fantasy: I Disguised Myself as the System

Zheng Fei, who traveled to the world of warriors, awakened the camouflage system. So Zheng Fei disguised himself as the system. Young man, I am your exclusive system. If you activate it, you can level up as a warrior while lying down. "How to activate?" Sacrifice valuable items to me to activate the system "Okay!" After the selected unlucky guy sacrificed all his belongings, Zheng Fei, disguised as the system, disappeared from the world. "Hey, are you still there?" "System!!!" "Am I being lied to?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.