With only Du Sao Body Technique and abundant Primordial Energy, it's still not enough in reality.
Du Sao Body Technique can continuously stack speed, but human reaction capabilities have a limit, so it's still not doable.
Even in the Absolute Secret State which enhances reactions, continuously stacking speed to reach the Night King's level is impossible.
However, the function of the Ghost Immortal Step perfectly compensates for the limitation of human reactions.
Because the Ghost Immortal Step has a drawback, once the Immortal's Guidance designates a target, you can't change direction before reaching it.
Previously, Chen Guan already tried and found that if you treat a living creature as the target, and if its position changes, the Ghost Immortal Step will also adjust accordingly.
This flaw can be easily exploited by others, concentrating firepower or even leading you by the nose.
For others, this is a huge flaw.
But for Chen Guan, this doesn't count as a flaw.
