Tao Te Ching: No matter whether there is multiplication or not, emptiness and reality are born together.
In Lao Tzu's view, what is invisible is more important than what is visible.
Example: bowls and houses
Make a bowl, and the person who makes the bowl makes the wall of the bowl; When we built the house, we actually built the brick wall; But what we want to use is not the visible container wall, nor the brick wall of the house, but the space in the container, which is invisible and intangible. So is the house. When we build brick walls, we finally use the space between them.
Invisible things are more important than visible things; Only those who are sensitive to what they can't see are people with real patterns. If a person's eyes are all visible, then this person is a small-minded person, a stingy person, or a person who can't achieve great things.