Qi is a concept developed by ancient Chinese philosophers to make sense of their environment. Qi is ever-present within the continuum of the most insubstantial to the densest of matter.
See it manifested in the 10 000 things
Hear it within musical notes
Taste it within the five flavours
Smell it within scents
Sense it within emptiness
Feel it course through out our bodies
In other words,
Qi permeates all;
it is all that we sense physically and
something that lies beyond existence.