Zhouyi BenyiLine statement
'The one-eyed can see' continues from the previous line. Nine in the Second Place is Yang-firm and attains Central Position, representing a worthy woman.
Above she has a proper correlate, but that correlate is Yin-yielding and not upright; thus a worthy woman is matched with an unworthy mate and cannot fully accomplish the merit of inner assistance.
Hence it bears the image of 'the one-eyed can see,' and its divination is that it is advantageous for the constancy of a solitary person. A solitary person is also one who embraces the Dao, maintains rectitude, and lacks a proper mate.