C660 The Breathing Technique's Drawbacks

"Girl, I don't cultivate the Breathing Technique."

"I only know how to refine pills, but I don't know about those high-tech things."

Ye Fenng replied indifferently.

In his opinion, the Breathing Technique was just like that for the Ghost Killing Team.

By inhaling large amounts of oxygen, one's body would be able to increase the strength and reflexes of the nerves