First Clearing was a rather boring process. Plus, you couldn't just give up halfway, because going into the Instance Dungeon required a special state of mind.
If you went and did something else halfway, then everyone would require additional time to refocus and adjust themselves again.
Such a short time to rest didn't affect this and would also allow them to feel more relaxed. Sky Moon had some of his own ways of dealing with certain aspects of this. Additionally, these small details were exactly what Lu Li lacked because his worldview didn't include the possibility of mental fatigue in the first place.
"How could you be picky when there were still games to play?"
"How could you be picky when you were in an elite squad already?"
"How could you be picky when you were participating in the First Clear?"
