I Can Level up by Killing Monsters

Ye Chen traveled to a different world and activated the monster-killing upgrade system. Kill a mob and level up. Kill a monster and get promoted to three levels. Kill a big monster and level up five. Kill a mini-boss and upgrade to level ten with low-probability explosive equipment. Kill a mid-boss and upgrade to level 15 with a mid-level probability of exploding equipment. Kill a big boss and upgrade to level 25 with a high probability of exploding equipment. Kill a super boss... Kill a final boss... Literally? ? ? ? Probability of exploding equipment? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.