How many words are there in Zhouyi?

The real full text of the Book of Changes is only about 6700 words, which is called the Book of Changes. Most of the others were produced by later generations, not the original book of changes.

Overview of the Book of Changes

Yi is changeable, and Jing is law (or classic). That is, the Book of Changes, a rigorous philosophical work, can be used as divination in science. It is only because it is profound and difficult to understand that there are many far-fetched theories.