Back then, after his demon avatar used the Mirror of Change to transform into the appearance of Wang Xiao, he could no longer use any treasures or pills that could change his body or appearance.
In other words, his appearance had already been fixed. No matter what methods were used, they could no longer be changed. Even the Twin Face Spectrum could only change Xiao Shi's appearance and could not make the demon avatar change into Xiao Shi's appearance.
"That's fine too." Xiao Shi knew the key this time was that he had to have the appearance of Wang Xiao. Even if the demon avatar could not change his appearance, it would not affect him much. After all, Xiao Shi did not plan to let his demon avatar appear in front of others next. He had other arrangements for his demon avatar.