After talking it through, the two decided that it was best if they left this temple.
Walking close to the idol may trigger a side quest and Lith wasn't ready to take on it anytime soon. There was a main quest pending and he first wanted to get done with that.
By now, Lith was using game terminology to refer to things.
Dushkarbor's adventure was a side quest he had to do to have a stronger physique and get to understand what actual body cultivation was.
His own world had it, but it was not the best.
Lith's world was more about magic cultivation than body or anything else. They were masters of it and had an unworldly connection with the elements.
The main quest that Lith was talking about was the world war he was planning out. There were far too many things that came into play and each piece had to be put together to get an acceptable outcome.