What are the manifestations of metaphysics in ancient poetry?

Metaphysics in philosophy refers to the part that explores the fundamental principles of all things in the universe.

There is a saying in the Book of Changes that "the metaphysical person refers to the Tao, while the metaphysical person refers to the device".

For example, in Su Shi's "Red Cliff Fu", "Gai must look at it from its changers, then heaven and earth can't look at it for a while, then things are infinite."