It must be said that the Supreme Nine True Sect's path of Dao is indeed profound. The Divine Lord is formidable, able to create my own Divine Skill based on the compatibility with the secrets of the Profound Sect. Master Xian is also a scholar like a Celestial Being, and he was able to pick out all the changes for reference and optimization, explaining in detail their causal relationships, although there was also a hint of teasing...
But without a doubt, the "Blood Talisman Heavenly Book" is so much easier to understand than the Nine Yin Manual, that utilitarian book.
So, Li Pan opened one eye and closed the other, while Li Qingyun did the opposite,
With the Nine Yin Manual in the left hand, and the Blood Talisman Heavenly Book in the right,
He proceeded with both at once!
He quickly deduced a method to refine his human form into the Nine Yin Fourth Turn and achieve Core Formation breakthrough!