Naive materialism: Explaining the world based on a certain substance, thinking that the world is the same substance as Jin Mu's fire, water and earth. Based on experience, the main feature is that the world is material, not God or his own thoughts.

Modern metaphysical materialism: based on modern science (such as classical mechanics, atomic hypothesis, etc. ), it equates matter with the microstructure level-atom. Also called mechanical materialism. For example, they think that the trees, houses and bodies they see are all made of atoms.

"Things change" is a dialectical view; And "out of context" is a metaphysical view.