It is.

[Wait, wasn't the way he was about to explain this a bit too casual?

System! System!? Are you there? Hey! I'm talking to you! Where are you? Give me an easy mode here! Let me have multiple choice! This is too much!

Of course when he's rid of the system he needs it.]

But, there are levels. Generally one follows such principles on the path to immortality when one is a cultivator. Of course, one must have a good foundation to start