Xu Tui had already figured out the basic rules of the officials in the Samsara Small Universe. That was why he suggested impersonating Judge Ma. In the Samsara Small Universe, the effect of appearance was much weaker than in other small universes. It was only because the Netherworld had been in charge for a long time that appearance was basically useless.
Xu Tui knew this very well.
The identification of the Samsara Small Universe mainly came from two aspects. The first was naturally the aura of the mental body. Everyone's mental body aura was unique. From a scientific point of view, the mental body aura was the unique frequency fluctuation of everyone's mental body. No one could imitate this.
However, it was unrealistic to use the aura of the mental body to determine a person's identity, even in the Netherworld.