Before Shen Long advanced to the Unity Stage, he had no use for the content in the latter half of the volume.
In the Scripture Pavilion of the Qianling Sect, there were also Divine Soul techniques, but they were all of common quality; the highest one could cultivate with them was to the Void Refinement Phase, at most strengthening the Divine Soul somewhat.
According to the jade slip, the "Mysterious Soul Secret Manual" consists of twelve layers and one can cultivate it from the initial stage of Divinity Transformation up to the Late Mahayana Stage. This was indeed a high-level Divine Soul technique, and the affiliated Divine Skills were also strong. It required Elixirs to assist in cultivation.
As an Alchemist, Shen Long could refine the Elixirs required for cultivating the "Mysterious Soul Secret Manual" as long as he found the materials.
