ONE-WORD AWARENESS
華嚴宗
The Huayan zong (Hua-yen or Flower Garland)
The stained mInd, ruled by the Identity when considering intellectually "Illusion," believes that Liberation and Awakening arises when the Illusions are abandoned.
It is then believed that the great Truth, the reality, lies beyond those Illusions and will be revealed.
But, when Awakening is attained, one discovers that "Illusion" is in effect the only Reality.
So there is not really an entry or a letting go of the Illusions.
The Treatise on Awakening of Faith says, "If sentient beings can contemplate no-thought, this is called entering the gate of true thusness."
This Illusion is Sensory Awareness without any content whatsoever.
Thus the Contemplation of "Sensory Awareness of Sensory Awareness" is the Contemplation of No-Thought that is not simply an Empty Mind.
It is then defined well in Huayan as:
Emptiness of the illusion of intrinsic nature or own being.