Or another way to describe this phenomenon was to place ten mirrors in a circle, with a lit candle in the middle of the circle.
The reflections of the candle appear in each of the mirrors, and each of those reflections appear in every other mirror, endlessly. So each part is contained in the whole, and each part is the whole.
This interdependence of the whole and parts is called “the realm of non-interference of principle and things,” and the interpenetration of parts is called “the realm of interference of all things.”