In accordance with the Taoists, the actual thing to be present in passive listening (wu-wei), is the same as to act spontaneous (tzu-jen).
Any spontaneous action is an expression of, that there is a passive listening presence, a space between the thoughts.
When for instance the Taoist is seeing, that there is fear, he observes it neutral as in a mirror, without saying yes and no, and feels it deeply and incisively, without seeking to achieve anything with it.
The actual experience in this passive listening presence, makes the experience free from fear; and that is to act spontaneous.
In all this the unknown is at stake; reality or truth.
Meditation is in other words to enter into the unknown.