Nine Heavens Cloud Sky Force is currently the most powerful and valuable cultivation technique Zhang Yu has mastered in combat martial arts.
This pre-military-level martial art can open air apertures within Gang Qi, allowing each aperture to absorb one's own power and unleash it when needed.
When the Nine Heavens Cloud Sky Force is advanced to Level 10, it can open 10 air apertures, with each aperture accumulating power from an opponent's attacks and releasing the power of 10 strikes in one go.
Later, when Zhang Yu advanced the Nine Heavens Cloud Sky Force to Level 20, apart from the increase to 20 apertures, the capacity of power each aperture could hold also greatly expanded as Zhang Yu's physical endurance grew.
Zhang Yu still remembers when he clashed with Wang Yin using Nine Heavens Cloud Sky Force, Master Xinghuo advised him that the different palm strikes and punch forces absorbed in the apertures should be combined with different moves for maximal power.
