The "Sound Transmission Immortal Canon" obtained by Jiang Wang was directly sensed by the ancestor of the Five Immortal Sect from the shadow of the Ear Immortal on the "The Chart of Ten Thousand Immortals Coming to Court." In essence, it is a form of inheritance.
That copy of The Chart of Ten Thousand Immortals Coming to Court was already a replica, and the spiritual nature of the immortal's shadow had been worn away over time until there was almost nothing left. Additionally, the understanding and cultivation of the Five Immortal Sect's ancestor were limited, compounded by the lack of a Technique Introducer...
For a long period, the value of the Sound Transmission Immortal Canon failed to be realized.
Even the ancestor of the Five Immortal Sect himself could only use the "Dream Order" as a substitute for the Technique Introducer. Although to some extent, it barely recreated the secret techniques of the Immortal Palace era, its performance was quite mediocre.
