"In fact, some things in the rumors out there are not true at all, but they are not far off the mark." Gong Yu paused, then spoke again, "This array is so dangerous that even our family members dare not enter it recklessly; apart from the established steps and routes to return home, none of our people dare to venture inside."
Because once you enter, you really can't get out.
Every time they return, they need to tread carefully at certain specific places. They can't afford to make a mistake...otherwise, the consequences are unbearable.
Unless you are willing to risk your life.
The forbidden characters outside are warnings to outsiders, but reminders to us," Gong Yu turned back to look at Mu Lin before continuing forward cautiously, "Over there, it's actually just a junction on our way home."
The reason for the large stele is merely to guard against getting lost, to remember where to enter from. It's not as complex as outsiders believe.