His mind reading was an interrogation divine artifact, but it was not omnipotent. Therefore, Xu Tui handed the matter of the interrogation to Yang Huai. In terms of ranking, Xu Huacheng could be considered the third-in-command of the Spiritual Race's military. He was also the core authority of the Xu Clan.
From the known information, Great Elder Xu Yi trusted Xu Huacheng more than Xu Zhijia. Simply said, Xu Zhijia was the ferocious tiger of the Xu Clan, and Xu Zhijia was also the hunting dog of the Xu Clan.
Fierce tigers were fierce, but hunting dogs were more loyal and obedient.
From this point, Xu Tui determined that Xu Huacheng might know more information than Xu Zhijia. This required him to take the initiative to spit it out.
The prerequisite for him to obtain information through the mind reading was that he had to ask the relevant key points and let the other party have the answer he wanted to know. Only then would Xu Tui be able to know it.