Sorry, I Am Invincible

Novel Summary
Luo Chen traveled to the Tianyuan Continent and became the peak master of the Saint Yuanzong. He obtained a wonderful system. As long as he collects waste, his apprentice can become stronger, and since then he has embarked on a life of backstabs.
“Master, you are truly a peerless expert, and I can break through your realm with every move.”
“It turns out that the master asked me to cut trees is also a practice!”
Luo Chen watched the apprentices break through frantically, stabbing himself one by one, only wanting to say that Mom is selling criticism, and on the surface he still pretends to be relieved!
What kind of evil did he commit in his previous life to accept these evil disciples, what a sin!
– Description from readMTL