Ever since the Four Divine Sect had existed, the appearance of every Divine Emperor was enough to cause a huge commotion. One had to know that the Four Divine Sect had a long history and had existed before the collapse of the Immortal World.
Although the Rain Celestial Realm was the most respected, the Four Divine Sect had four Divine Emperors at its peak. Even the Rain Celestial Realm had to give them some face. No matter which sect's new emperor appeared, the Celestial Realm would send gifts.
At that time, there was no Cultivation Alliance, only the Brilliant Void Realm. Before the Rain Celestial Realm collapsed, the Brilliant Void Realm was the direct branch of the Celestial Realm, responsible for controlling all the Qi Practitioners in the lower realm.
However, due to the Four Divine Sect's strength and some special reasons, the Rain Celestial Realm allowed the Four Divine Sect and the Brilliant Void to exist simultaneously in the Brilliant Void Realm.