What are the ways to remember before you have words?

Before the emergence of Chinese characters, the methods used by the ancestors to record mainly included:

1) Knot the rope-if you are afraid of forgetting, knot the rope. Remember, big things are tied up and small things are summarized. This has nothing to do with the origin of words.

2) Carving-Carve bamboo and wood into letters, write notes with carved teeth, and carve one tooth for everything. This method has nothing to do with the generation of characters, but it lasted for a long time after the generation of characters. First, it is used to express an agreement, that is, cut a piece of bamboo board or wooden board from the middle, and each side holds half, so the two halves are combined to fulfill the agreement, so there is the so-called "contract". The second is to write the course content on a big wooden board with teeth carved on the edge, which is called "karma". Teachers give karma to students, and students lose a tooth every time they learn a lesson, so teaching is called "teaching" and students are called "graduation" or "graduation" after learning.

3) Eight diagrams-one long bar indicates masculine gender (called "Nine" in Zhouyi) and two short bars indicate feminine gender (called "Six" in Zhouyi). These two symbols overlap into three, and there are 64 combinations. This can represent complex things, but it is still not directly related to the production of words. Later it was used for divination.