The corresponding ancient martial arts power of a high-grade Breathing Technique was relatively traceable.
For example, the inheritance of Azure Dragon City—the Power of Azure Dragon. This was a way to master the power of ancient martial arts, and the corresponding Breathing Technique of Azure Dragon City was also a high-grade Breathing Technique.
Another example was Ji Xuanyuan's Breathing Technique. It was also a high-grade Breathing Technique.
On the other hand, some Breathing Techniques that were very famous on the market, such as the Chaos Breathing Technique, the Heaven and Earth Breathing Technique, the Cosmic Star Breathing Technique, and so on, were evaluated as low-grade Breathing Techniques.