C28 Lip gun and tongue

The meridian diagram was also divided into three, six, nine grades.

A normal meridian circulation diagram could open up 999 meridians, while a profound meridian circulation diagram could open up more meridians. For example, this "Flowing Water Court Diagram" could open up 89 meridians, and the "Ancient River Astral Diagram" could open up 108 meridians, making it even more exquisite