Mayi energy is the vital energy that everyone possesses, from a small insect to even the titanic beasts of Yudan Limei.
Mayi energy is capable of being manipulated and empowered, which is how the wizards of the Yudan world use the power of their internal Mayi energy to create techniques of immeasurable strength.
The Mayi in its purest state is an energy that can be easily modified, giving it different properties such as the ability to become solid, liquid or gaseous, become elements, heal, or even destroy.