In the Earth Profound Realm, Mystical Martial Arts are exceedingly rare.
So much so that in the entire Earth Profound Realm, those who have comprehended Mystical Martial Arts can be counted on ten fingers.
These Mystical Martial Arts are ever-changing. For example, those who comprehend Phoenix Essence can develop various Combat Techniques.
Similarly, there are some Combat Techniques specifically prepared for those who have comprehended Mystical Martial Arts. Even if ordinary cultivators learn these techniques, they cannot bring out their full power. Only those who have understood Mystical Martial Arts can truly unleash the full power of these Combat Techniques.
These Combat Techniques, prepared specifically for those who comprehend Mystical Arts, are called Profound Techniques.
However, Profound Techniques have long been lost in the Earth Profound Realm, and those who have comprehended Mystical Martial Arts in the Earth Profound Realm only have a partial understanding of them.