Demons in Troubled Times: I Can Synthesize and Upgrade Skills

In this world where demons are causing chaos and monks are everywhere, Chu Huan, who accidentally traveled through time, awakened the synthesis system. "What? You only have rubbish skills? Brother, I won't refuse anyone who comes!" "There's a big sale on heaven-level skills! It only takes three local-level skills to get a glimpse of the secrets of heaven-level skills!" No matter you are a thousand-year-old monster or an eternal genius, in front of my brother's cheats, I can only practice as much as I can! A century-old family and a thousand-year-old sect are not as capable as me. Watch Chu Huan rise step by step from the bottom of this troubled world. Kill evil spirits, eliminate demons, accept all laws in the world, and develop the true meaning of chaos. From now on, I will set the rules in this world!