As a divinatory line, nine at the fourth place of Coming to Meet reads within the hexagram's overall concern with a bold, strong female met unexpectedly; not good to marry such a one, since she should not be long associated with. The line occupies a place that does not match its own nature in the classical doctrine that odd places favour a firm, yang line and even places favour a yielding, yin line. Its own text, that a wallet with no fish in it, which gives rise to evil, from keeping himself aloof from those below, is the particular fortune assigned to this one stage of the situation, not to the hexagram as a whole.
The fourth line corresponds by classical convention with the first line, and the two correspond here, since one line is yin and the other yang. Read together with the trigram it belongs to, Qian in the upper position of the figure, the line marks the first word of the upper trigram, close enough to the ruling fifth line to be shaped by it, one stage in the six stage movement the hexagram traces from its first line to its last.
A change at this line, from yang to its opposite, is the mechanism the tradition uses to move from one hexagram to another. Flipping the fourth line of Coming to Meet turns Qian into Xun while the other trigram, Xun, stays as it is, which yields Coming to Meet's changing partner, The Gentle (King Wen 57), the hexagram this line is recorded as transforming into.