Mercenaries which dared to risk entering the Dark Moon Forest's inner zone were basically not good-natured people. In such a place, no one would find out if they killed anyone, not to mention any form of punishment.
It wasn't Huang Yueli's first day in society so naturally she was very clear-headed that pretending to be some worthless character was safer for them.
If her identity as an Armament Master and Li Moying was a disciple from a large Sect was exposed, they would easily be threatened.
There was no mental burden if other people found out that they had valuable items on them and they would be attacked and possibly killed, with their possessions taken away from them as both of them were weak.
So she immediately exhibited her acting skills and pretended to be a female student who was on her first training session.
Luckily, the current situation they were in look exactly like what she described.