The so-called "Ring of Unity" is a magical tool personally crafted by Emperor Tri-Moa.
Visually, it appears as a circular door that emits a blue glow. A demonic beast passes through it in an instant in the real world. But within that brief moment, they experience countless realistic illusions that are indistinguishable from reality.
The test of the "Ring of Unity" naturally assesses whether the demonic beast would harm its master under various extreme circumstances.
The Ring of Unity is difficult to make; thus, the Beast Taming Sect could only produce one in a hurry. Although the time needed to complete the test is short, the number of demonic beasts in the Beast Taming Sect is simply too many. These include not only the personal demonic beasts of the disciples, but also a large number of masterless beasts responsible for manual labor, managing the spiritual fields, and guarding the sect.