Si Ren had already formulated a countermeasure, and his intention in saying this was to divert Zhang Dekai's attention.
The Soul-Absorbing Technique could read memories, but its release conditions were somewhat harsh, as it only worked on targets whose mental strength was lower than the caster's.
Therefore, what Si Ren needed to do right now was to break down the defenses within Zhang Dekai's heart. Physical torture was the primary choice, as well as the most effective one.
Chapter 601