The test method was actually very simple. Furthermore, there were ready-made comparison parameters. That was to use the emperor's seal to make an edict to pass through the Origin Universe.
When the two Great Emperor Seals made the edicts separately, the duration was ten seconds. Even when the two Great Emperor Seals were stamped at the same time, they only lasted for 20 seconds.
Now, he could obtain basic data by testing the changes in the power of the decree made by the mutated emperor's seal.
Xu Tui used the two mutated emperor's seals to make five royal decrees each. Then, he made five royal decrees that had the aura of two emperor's seals at the same time. He ordered 15 people to activate their protection and test them on the spot.