Whether history has inertia is debatable, but "Historical Secret Realm" does.
It is actually a "replay" of a certain period of time and history, a projection of an illusory yet real past. So, it has a limit.
The Secret Realm in the West Entrance is an example; when the distortion rate exceeds 100% (its tolerance limit), history turns into fantasy, and the Secret Realm naturally collapses.
Logically, the "replay" Secret Realm in the ancient city should also have a limit. If the original protagonist, Lu Ping'an, was killed and the cat's ceremony succeeded, it would naturally collapse.
And the Mother Goddess cult, they wouldn't have a second chance.
So, they had long designed a means to reverse "reality" and "illusion," breaking the boundaries of the conventional Secret Realm, turning the normally repeating Secret Realm into a one-time "limited-time live broadcast."
At this point, it is no longer a "Secret Realm" but "reality."
