The earliest surviving statement of the five is in the Hong Fan, the Great Plan, a chapter
of the Book of Documents that presents itself as a scheme of government handed down to
King Wu of Zhou. Its first item is the five, and the passage is short enough to give whole.
一曰水,二曰火,三曰木,四曰金,五曰土。水曰潤下,火曰炎上,木曰曲直,金曰從革,土爰稼穡。潤下作鹹,炎上作苦,曲直作酸,從革作辛,稼穡作甘。
First, water. Second, fire. Third, wood. Fourth, metal. Fifth, earth. Water means soaking
and descending; fire, blazing upward; wood, bending and straightening; metal, yielding to
the mold; earth, sowing and reaping. What soaks and descends becomes salty; what blazes
upward, bitter; what bends and straightens, sour; what yields to the mold, pungent; what
sows and reaps, sweet.
Book of Documents, Hong Fan. Translation ours, from the Chinese Wikisource text.
Three things in that short passage are worth more than most of what is written about the
five elements in English.
The order is Water, Fire, Wood, Metal, Earth. That is neither the generating order nor the
overcoming order. It is not a scrambled version of either. The list predates both cycles,
which means the five existed as a set before anybody arranged them in a ring, and the
famous circular diagrams are a later development rather than the original idea.
Each of the five is defined by a motion, not by a substance. Water is not the wet stuff; it
is soaking and descending. Metal is not ore; it is the property of taking a shape when
worked and holding it. That is why translating xing as element misleads, and why a chart
calling you Fire is describing behavior rather than composition.
And then, immediately, the tastes. Salty, bitter, sour, pungent, sweet, each derived from
the motion rather than asserted alongside it. The very first thing the tradition does with
the five, in the oldest text we have, is use them to classify something else. The
correspondence table is not a later ornament on the system. It is the system.