This easily led to some unrest, which could negatively affect the reputation of the sects involved.
However, this time it was different. In a mysterious turn of events, the ancestors of the three major forces all sensed an extraordinary aura, realizing that this secret realm was definitely something exceptional.
Coincidentally, another powerful force had also invaded the area, attempting to take control of a portion of the secret realm. This put some pressure on the three major sects near Donglan Immortal City, forcing them to temporarily join forces, with both the excuse and the power to fully seal off the area around the secret realm.
According to their rules, only cultivators at the True Immortal level or higher were allowed to enter the secret realm. Moreover, any resources obtained within the secret realm had to be handed over to the three sects when leaving, or else severe punishment would follow.