Kan is composed of a single solid (Yang) line between Two broken (Yin) lines, and is thus considered a Yang Trigram. Kan literally means "The Abyss", and is usually taken to apply to the Concept of "Water". In a Hexagram, it is often a warning of danger.
Fu Hsi placed Kan in the West, which would relate to the Autumnal Equinox, around September Twenty-First. Wiccans celebrate the Festival of Mabon. In 2013, this day was on September 22. On this Day, Night and Day are equal, which leads us towards Winter.
Emperor Yu placed Kan in the North, correlating to the Water Element. For him Kan represented the second son.
Kabbalists would link Kan with Yesod and Luna.
What does Confucius say about Kan?
Rain to moisten the seeds, Kan suggesting the idea of Water; of channels and ditches for draining and irrigation; of being hidden and lying concealed; of now straightening, and now bending; of a bow, and of a wheel. God toils in Kan. As referred to humans, it suggests the idea of an increase of anxiety; of distress of mind; of pain in the ears; it is the trigram of the blood; it suggests the idea of what is red. As referred to horses, it suggests the idea of the horse with an elegant spine; of one with a high spirit; of one with a drooping head; of one with a thin hoof; and of one with a shambling step. As referred to carriages, it suggests one that encounters many risks. It suggests what goes right through; the moon; a thief. Referred to trees, it suggests that which is strong, and firm-hearted.
Noah’s second son was Shem, a Hebrew Word Meaning literally “Name”. According to the Hebrew Scriptures, he was the ancestor of what we now call “Semites”, including Jews and Arabs. His great-Grandson, Eber, is said to be the progenitor of the Hebrews, which nationality literally Means “Descendents of Eber”. Following a constantly repeating Pattern in the Torah, Noah’s second son was said to be greater than his first. According to Jewish Tradition, Shem later became the Priest-King of Salem (Jerusalem) titled “Melchizedek” (the Wise King) and honored his descendent Abraham. The comment above by Confucius about “now straightening, and now bending” is a referent to a priest in front of an altar, an Ancient interpretation of Kan, which relates to this concept.
It is very important to remember that Kan is the Sign of Blood