1. Universality of connection.
There are no isolated things in the world. Everything and all phenomena are interrelated. The whole material world is a whole that is interrelated in many forms. For example, the development and growth of living things can not be separated from sunlight and water, and the formation of water can not be separated from hydrogen and oxygen. People's life can not be separated from all kinds of material means of life provided by nature, and no one can but have various contacts with society. Isolated people do not exist.
2. Objectivity of contact.
Contact is inherent in the thing itself, objective and independent of human will. This is the objectivity of contact.
3. Diversity of contacts.
This connection is complex and diverse. The universality of the connection of the material world is manifested through various concrete connections of concrete things. For example, there are direct contact and indirect contact, internal contact and external contact, necessary contact and unnecessary contact, inevitable contact and accidental contact. Different connections have different influences and functions on things. The so-called law is the internal, essential and inevitable connection of things, which plays an important and decisive role in the existence and development of things. The external, non-essential and accidental connection of things will also have an impact and function on things. Neither can be ignored.
Do you understand now?