Just One.

Ryu didn't seem to notice this at all, his heart in a state of perpetual calm. 

The Chaotic Silk Meridians were well-known for their shocking abilities. Though most didn't know exactly how to unleash their full potential, many were aware of what that highest potential was. 

Ryu, though, had never had the luxury of using it. This was because he had been forced to hide it all this time. Unable to circulate or project the qi, he was forced into a passive state where he could only cultivate like a normal person. 

But why was it that his cultivation was so fast in Sacrum? Why was it that while it took others millions of years to progress as far as he had, it took him a handful of years? 

The reason for this was his access to the Chaos Plane. He didn't have to pull in qi from the surroundings because he had access to a Plane of qi within himself.