What's the difference between left hand and right hand?
Right hemisphere realization: speech speed → language (because speech speed is faster than that of the left brain, and other functions of the right brain cooperate, so the right brain is suitable for vocal music), balance → action, immunity, image, music, painting, spatial geometry, imagination, synthesis and other functions. The right hand is mainly controlled by the left hemisphere of the brain.
The left hemisphere realizes: speech speed → language, balance → action, immunity, concept, number, action, immunity, concept, analysis, logical reasoning and other functions. But generally speaking, completing an action is controlled by the whole brain.
Everyone has different habits of using two hands, so the flexibility of each person's two hands is also different; Most people are more skilled in their right hand than their left hand, some people are skilled in their left hand, and some people are commonly known as "left-handed".