From 'Nine in the Third Place: The wild goose gradually approaches the dry land' to 'advantageous to defend against marauders.'
The Correct Meaning states: 'The wild goose gradually approaches the dry land; the husband marches forth and does not return, the wife conceives but does not bring forth: misfortune': lù is the summit of a high plateau.
Nine in the Third Place dwells at the top of the lower trigram, presenting the image of advancing to the heights; hence it says: 'The wild goose gradually approaches the dry land.'
Advancing to the dry land, it has no resonance above and is adjacent to the fourth; the fourth also has no resonance, and being close they find affinity.
The third originally belongs to the Gèn trigram, of the same family as the initial and second lines; yet it abandons its own kind and unites with the fourth, which is the husband marching forth and not returning.
Since the husband delights in an improper match, the wife also cannot preserve her chastity. Conceiving by one who is not her husband, 'she does not bring forth.'
'Seeing profit and forgetting righteousness, eager to advance while forgetting the old—this is the way to misfortune.' Hence it says: 'The husband marches forth and does not return, the wife conceives but does not bring forth: misfortune.'
As for 'advantageous to defend against marauders,' when different trigrams unite in goodwill, they fear that marauders might cause estrangement; yet being harmoniously aligned and compliant, they protect each other in peace, and nothing can come between them.
Hence it says: 'Advantageous to defend against marauders.'
Note: 'Lù is the summit of a high plateau.'
The Correct Meaning states: As for 'lù is the summit of a high plateau,' the Erya says: 'A high, flat place is called lù,' hence it is called 'the summit of a high plateau.'