Even Nana had not anticipated that Mingde Hall would not only equip itself with soul tools designed to guard against soul attacks, but would even shrink the technology into miniature soul tools.
Logically speaking, not a single instructor in Mingde Hall specialized in this field of research.
As Huo Yuhao's chief steward, Nana knew very well that soul tools of this nature were only touched upon by the Holy Ghost Cult. The Sun Moon Empire was virtually ignorant of soul research, let alone capable of developing such devices.
Chapter 669