Deathfang Power represents the spiral decomposition, while Echo Strength represents the explosion and concussion.
Although both belong to Southern Dou's Power, they clearly represent different directions of the Southern Dipper Secret Transmission, a kind of detailed research. It's like a sturdy Tree Root sprouting two dense branches, each with its own characteristics.
What Casio is doing now is astonishingly tracing back to the fundamental Tree Trunk and Tree Root through these two branches that are lush and bearing fruits. He is only taking the most original and purest essence of the Southern Dipper to act as a bridge between them.
In the Secret Martial Arts World, the common Secret Martial Art mainly involves the Meridian Blood Vessels and the distribution of the Muscle Group during movement. When a Secret Martial Artist cultivates two Secret Martial Arts at the same time, the overlap of different Secret Martial Art meridian routes must be considered.
