Zhouyi BenyiJudgment
Fu means trust and sincerity. In this Gua, two yin lines are within and four yang lines are without, while the yang lines at the second and fifth places both attain the Central Position.
Viewing the Gua as a whole, it is hollow within; viewing the two component trigrams, it is solid within. Both are images of trust and sincerity.
Furthermore, the lower trigram is joyous in responding to the upper, and the upper trigram is gentle and penetrating in yielding to the lower, which also carries the meaning of sincere trust.
Pigs and fishes are creatures devoid of understanding; moreover, wood rests upon the lake, solid outside and hollow within—both images of boats and oars. Utmost sincerity can move even pigs and fishes; one may cross perilous hazards without losing one's constancy.
Therefore, if the diviner can elicit the response of pigs and fishes, there will be good fortune, it will be advantageous to cross the great stream, and it must also be advantageous to remain steadfast and correct. 'Shuo' is pronounced like 'yue' (joyous).
This explains the name and meaning of the Gua by means of its structure and virtù. This speaks in terms of the Gua's imagery. If one is sincere and upright, one responds to Heaven.