C106 Nine Days of War

Within the Ancient Saint Realm, the exosome passed on the knowledge of Preword Secret to Yun Fan. The Preword Secret was too complex, and was worthy of being called the head of the nine secrets.

Looking at it from the perspective of the Heavenly Monarch in his previous life, the amount of time that the exosome had to cultivate this technique to the limit was already more than enough for him