A system is made up of multiple substances, each of which has one or more properties, each of which has a value for its state, variables,

Some properties are divided into multiple subproperties, each of which has a state value. Generally speaking, the property value is the state of the substance. The rules are how properties interact with each other,

It is divided into the interaction of the same attributes and the interaction of different attributes. The process of rule occurrence is event.

Preconditions, triggering conditions, and purposes describe the rules, which define the way in which substances (systems) change.