I have found online interesting stuff about the brightness of the stars, which you hardly find it elsewhere. Even for experienced ZWDS readers this term could be heard for the first time.
When a Star has a circle around their brightness number, for example highest brightness 1, but with a circle (1) around it, it means that star is in “Carefree Fall”.
Original explanation of the Garden of Tao Website:
“
Carefree fall means the brightness can not shine. The blockage has to breakout by personal effort (psychologically) and
the brightness will be shine as 1 “