With sodium acetate trihydrate and acetic acid as the core
In the past, there were wise men who were good at studying things. His ambition is to study the wonders of sodium acetate trihydrate and acetic acid, in order to understand the reason for the change.

In the secret room, list all kinds of utensils. First take sodium acetate trihydrate, look at its shape, bright and shiny, like frozen chips. Then take acetic acid, smell its gas, and rush with enthusiasm, like a slight smoke of fire.

The wise man placed the two in a vessel, and warmed them with the heat. After a while, he saw their blending, and the color gradually changed, as if there was light in it. In the meantime, the changes are unpredictable, or there are bubbles looming, like spiritual beads floating.

The wise man gazed, and his heart was enlightened. Knowing that the two are in harmony, their natures help each other, and all kinds of wonderful images are produced. Whether it is a qualitative change, or a change of ability, it is all hidden in the invisible.

Then he recorded his feelings in detail, and drew notes for later investigation. In the hope of this, future generations can learn the way of studying things, and understand the mystery of changes in the world. In the way of using things, new methods are added, and good ways are added.