Sòng. The left part of the character is YAN²: a mouth, KOU³, (2) with a tongue or making a sound (1), and maybe identical to YIN¹: making a sound. The right part is GONG¹, the highest one of the five titles of nobility in ancient China, the Gong or Kung. Probably the Gong was the ultimate authority to resort to when one needed a judge. The Gong is far enough from the people to be fair, a village-elder is too close. This part consists of divide, BA¹ (3) and either mouth, KOU³, or private, SI¹ (4). Divide might indicate the fair division of property and rights. According to Karlgren some of the forms of Gong seem to suggest a phallic interpretation (5). Gong's meaning is further: public, fair, impartial, father, (official place:) palace. Lawsuit, litigation, argue, demand, justice, publicly. Old: to accuse, regret, blame. 

The trigrams: Water below or inside Heaven.
Heaven associating with water is incompatible movement: contention. The noble one, when he sets up affairs, plans ahead.

The soul (Water) creates one's individual life. But the light of Heaven is not especially a power which fights, it is a power which organizes. The 5th line causes trigram Heaven to change into "manifested" light, and that is the best way to get hold of one's own way to live.
Hex.6 is the opposite of 36, of hiding your light. So it is certainly not only about contention, it is most of all about assertivess, a quality which is not bad at all. But make sure your timing (Heaven) is right, without that your assertiveness will end in fights.

More about hex.5 and 6
About the lines of hex.6
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