In the days that followed, Zheng Fa and Zhang seemed to return to their familiar lives of the past.
The method of researching "Heavenly Spirit and Earthly Fiend Transformation" remained the same.
Zheng Fa proposed various conjectures, Zhang used her Primordial Spirit Dao Body to conduct experiments and provide feedback.
From Zhang's feedback, Zheng Fa would modify the cultivation technique approach.
The principle of "Heavenly Spirit and Earthly Fiend Technique" is simple to state, but in practical operation, the complexity far exceeds other techniques—without false modesty, this method is much more complex than the "Great Freedom True Skill" left by the Great Freedom Demon Ancestor.
