Six in the fifth place is the hexagram's advice to somebody with no exit. The line names the count of Ji, whose brightness was darkened, and says that firmness and correctness are what serve. Where the first line flew and the fourth walked out through the gate and courtyard, this one stays, and what it offers is the maintenance of an inner standard in a place where showing that standard would finish the person holding it.
The framing belongs to its period and is given here as it stands, a court in which a man of rank concealed what he knew because the ruler above him would not tolerate it being known. The transferable content is the discipline rather than the setting. A querent here is being told that the situation cannot be corrected from where they stand, that departure is not currently available to them, and that what remains under their control is whether the compromise reaches the part of them that was worth protecting in the first place.
When the line changes, the upper trigram Kun becomes Kan and the figure becomes After Completion, King Wen 63, every line correctly placed and the classic warning immediately that such an arrangement decays. The destination is honest about what concealment achieves. It holds a thing in order at real cost, and it is a station rather than a resolution, which is why the line asks for firmness sustained over time and promises no end to the conditions requiring it.