Favourable hexagrams are harder to read well than difficult ones, because the temptation is to stop at the judgement.
Hexagram 11 rewards going further. Its middle lines describe the conditions that make the good period work: bearing with the uncultured, crossing the river on foot, not neglecting what is distant, and acting without partisanship. That is a set of instructions about how to behave during a favourable time, and it assumes the favourable time is an opportunity to do something rather than a reward for having done it.
The top line is the sharp one. The wall falls back into the moat from which its earth was dug; do not use the army now; and the text adds that perseverance brings humiliation. A hexagram named Peace ends with a warning against military action and a collapse of fortification. Whoever assembled these lines was not offering reassurance.
The counterpart, hexagram 12, is the same figure inverted and describes the opposite condition: heaven and earth not communicating, the great departing and the small approaching. Together the two are the book's basic statement about how periods work, and reading either alone loses half of it.
Translations agree closely here, which is worth noting. Where the imagery is concrete, walls, moats, rivers, armies, Wilhelm, Legge and the later manuscript-based versions converge. It is on the abstract judgements that they diverge, which is a useful rule of thumb for anyone weighing how much interpretive weight a passage will carry.