Spirit Eyes Mysterious Light Technique.
Although the name sounds somewhat rustic, it is, without a doubt, a Taoist Gate Righteous Skill, even capable of cultivating to the level of "Heaven View Earth Hear" and "Admiring Eye of Heaven" - such Great Divine Power.
By practicing this technique, one can open their Spirit Eyes to see the Mysterious Light, which can be used to inquire into all matters under heaven, even peering into the Heavenly Court and Underworld, life and death, past and future, spirits and demons, and the hidden secrets of gods and Buddhas.
In short, as long as it still exists within the Three Realms and the Five Elements, theoretically, anything can be investigated with Spirit Eyes Mysterious Light, revealing its essence and origins.
This was Xu Yang's understanding of the "Spirit Eyes Mysterious Light Technique."
But understanding was just understanding; he had never obtained its Mana Point, let alone practiced this profound and righteous technique.