Physics is to study the basic formality, properties, movement and transformation of matter in the universe, internal framework, etc., so as to understand the basic laws of the elemental formation of these framework groups and their interaction, movement and transformation. Physicists try to find the basic laws of all physical phenomena, so as to understand all physical phenomena in a unified way. This effort, while gradually making progress, is still far from achieving this goal. It seems that people's exploration and research of the objective world are endless.