Qin Muye was researching Heaven's Will, which seems to be equivalent to a weakened version of the Child of Destiny, and it is even the kind with a plan.
As for where this strand of Heaven's Will in Ji Sheng came from, Qin Muye was unclear. This thing blocked all divination, or it was even simpler than that—all divination in this world was essentially derived from this strand of Heaven's Will.
Ji Shan was not particularly interested in this Heaven's Will because he knew it was not something he could study. Instead, he was a bit interested in the Chaos Soul, intending to develop it into a Divine Skill.
Before that, he had already developed a Divine Skill called the Taiyin Three Talents Spirit Light, a passive Protection Divine Skill. It could lay three Protective Spirit Lights over his own Primordial Spirit to ensure his safety, essentially acting as a constant shield, and it could also obscure Heavenly Mechanism Calculation to some extent.