"The Retrospection Method concerns [time] and [creation]. It could be called one of the hardest methods in the world to learn, harder even than the Void Arts and Thunder Arts.
"Everything in the world evolved from the two primordial energies of yin and yang. Whether it is the spiritual eye art 'Contemplation of Transformation and Insight into Truth' or the great divine ability 'Returning Heaven and Reversing the Sun,' their essence lies in reversing yin and yang. So there are two more prerequisites for learning 'Contemplation of Transformation and Insight into Truth': proficiency in cultivating both yin and yang, and possession of a Yin-Yang Method Eye."
Ancestor Mi explained.
Cheng Xinzhan nodded and replied,
"Neither of those is a problem."
Ancestor Mi smiled at his words and said,
"That makes things much simpler. Come, I'll impart it to you now."
As she spoke, Ancestor Mi extended a finger. Spiritual light burst from its tip as she touched it to the space between Cheng Xinzhan's brows.
Cheng Xinzhan knew this was the "Anointment" method and neither flinched nor dodged.
Soon, he felt a mass of mystic light enter his inner landscape world from outside. He guided it into the purple tower and unraveled it with his primordial spirit. The mystic light transformed into a book: the "Bright Eyes of Contemplation of Transformation and Insight into Truth" method.
"Study it here. If there's anything you don't understand, just ask me."
"All right."
Cheng Xinzhan agreed. To avoid disturbing Ancestor Mi, he left the reed pavilion and sat in meditation beneath the immortal tree to study the method.
The method was profound, but put into plain language, its general meaning was that cultivating this eye art required a cultivated Yin-Yang Method Eye as its foundation. One then used the method eye to observe