Invincible Salted Fish System

Since the introduction of the salted fish system, it has been so easy to practice. You can practice while lying down and learn it at a glance. You can upgrade casually, without having to fight monsters or use all kinds of elixirs. It's just a piece of cake. What's wrong with being a salted fish, what's wrong with lying flat, but the system refuses to let it go. I just want to lie flat and bask in the sun like a salted fish, but it insists on making me invincible! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.