Are the eight trigrams eight of the 64 hexagrams?

Here bagua means the eight three-line figures. Combining two creates a six-line hexagram; doubling one trigram creates its corresponding doubled figure.

How do Kan and Li differ?

Kan has yang in the middle and yin outside. Li has yin in the middle and yang outside. Check each position from bottom to top.

Must I memorize directions before casting three coins?

No. Start with line values and the order of the six tosses. Directional arrangements can be studied later.

Basics · 4 min read

What Are the Eight Trigrams? I Ching Bagua for Beginners

You may have seen a bagua diagram many times without knowing how to read a single trigram. Start with three lines: they make eight patterns and open the way to all 64 hexagrams.

Why are there eight trigrams?

A trigram has three lines, each solid yang or broken yin. Two possibilities in three positions make eight combinations. A trigram has three lines; a hexagram has six. Keeping those terms separate helps you distinguish an individual trigram from a complete figure in the book.

Read line patterns from bottom to top. Kan (Water) is yin, yang, yin; Li (Fire) is yang, yin, yang. A changed position can create a different trigram, so learn to recognize the patterns before memorizing long lists of associations.

Names, symbols, and line patterns

The eight names are Qian, Kun, Zhen, Xun, Kan, Li, Gen, and Dui. The list gives the symbol, line order from bottom to top, and a principal natural image. Even when looking at a printed symbol, check the bottom rather than automatically reading downward.

Natural images are an important layer, not exhaustive definitions. The Discussion of the Trigrams includes many other correspondences. Start with names, patterns, and principal images; avoid turning traditional family or gender associations into fixed judgments about actual people.

Qian ☰: yang, yang, yang; Heaven.
Kun ☷: yin, yin, yin; Earth.
Zhen ☳: yang, yin, yin; Thunder.
Xun ☴: yin, yang, yang; Wind.
Kan ☵: yin, yang, yin; Water.
Li ☲: yang, yin, yang; Fire.
Gen ☶: yin, yin, yang; Mountain.
Dui ☱: yang, yang, yin; Lake.

What can the natural images suggest?

Familiar readings connect Qian with sustained activity and Kun with receptivity and support. Zhen suggests arousal or a beginning; Xun gradual penetration. Kan can suggest difficulty and passage through it; Li brightness and dependence. Gen suggests stopping appropriately, and Dui joy and exchange. These are starting points, not each trigram's entire meaning.

A team may need to get moving at one point and pause to revise its process at another. That does not make a person permanently a Thunder type or a Mountain type. Images prompt questions about conduct, rather than replace the work of understanding people. Their usefulness depends on circumstances, roles, and goals.

The trigrams and the five phases

A common set of correspondences assigns Qian and Dui to Metal, Kun and Gen to Earth, Zhen and Xun to Wood, Kan to Water, and Li to Fire. The five phases are a traditional way of classifying relationships, not the material ingredients of drawn lines. This layer of Changes studies should be distinguished from the basic yin-yang structure.

Plum Blossom uses the phases of Body and Function to examine generating and controlling relationships. Six Lines uses the palace phase for relationship categories and the branches assigned to each line. Knowing that the upper trigram is Wood is therefore not enough to assign every relationship label in a Six Lines table.

Metal: Qian and Dui.
Wood: Zhen and Xun.
Water: Kan.
Fire: Li.
Earth: Kun and Gen.

Earlier Heaven and Later Heaven arrangements

These are two arrangements of the same eight trigrams, not two sets of different line patterns. Earlier Heaven is commonly discussed through opposing pairs such as Qian and Kun or Kan and Li. Later Heaven connects the trigrams with directions and cycles, including Kan north, Li south, Zhen east, and Dui west. Traditional diagrams may put south at the top, so read the labels.

Tradition associates Earlier Heaven with Fuxi and Later Heaven with King Wen. Those names alone do not establish an archaeological date for every diagram in circulation. The diagrams have their own history of development. You do not need to memorize all directions to begin reading a hexagram.

From eight trigrams to 64 hexagrams

Combining any trigram above any other gives eight times eight figures. Descriptive names usually state the upper image first. Lü (Treading), hexagram 10, is Heaven over Lake. Reversing the pair gives Lake over Heaven, Guai (Breakthrough), hexagram 43. The same pair in a different order makes a different figure.

Practice identifying the lower and upper trigrams, then look up the hexagram's number and name. Once the structure is clear, read the text instead of deriving its entire meaning from two natural images. The name opens the door; the wording and context support a deeper reading.

Quick answers

Are the eight trigrams eight of the 64 hexagrams?: Here bagua means the eight three-line figures. Combining two creates a six-line hexagram; doubling one trigram creates its corresponding doubled figure.
How do Kan and Li differ?: Kan has yang in the middle and yin outside. Li has yin in the middle and yang outside. Check each position from bottom to top.
Must I memorize directions before casting three coins?: No. Start with line values and the order of the six tosses. Directional arrangements can be studied later.