Six in the third place is drawn when an approach has been made on manner rather than substance. The querent has been agreeable, the advance has been pleasant, and the text states flatly that it will be in no way advantageous. Readings landing here often concern a bid for position, favour or agreement that was warmly received and produced nothing, because nothing of weight was ever actually put on the table.
The remedy the line offers is remarkably light. Anxiety about the situation removes the fault, and the commentary adds that the error will not be continued. Nothing is demanded beyond an honest recognition that the approach was hollow, since a fault noticed at this stage has not yet had time to set. Querents who instead defend the approach as having gone well are the ones for whom this line turns costly.
Structurally the stroke is yielding in an odd place, incorrect for the position, sitting at the top of the pleasure trigram Dui where agreeableness is at its most concentrated. Compared with the two strong lines below, whose advance the hexagram endorses without reservation, this one shows the same forward motion with the substance taken out. The counsel is to supply the substance, not to abandon the approach.