Most meditation approaches laud lesser results such as spiritual penetrations, good feelings (that make you “smile”), etc. In contrast, a major objective of Chan meditation is to realize the state of No Thoughts.
The state of No thoughts can simply described as:
In other words, you have no external reactions with your body and mouth and no internal reactions by mental activities.
That is called having real Samadhi power.
That is called possessing real transcendental wisdom.
That is True Bliss.