The nouns left hand and right hand are opposite. People who are used to doing things with their left hands are called "left-handed". Doing things with your left hand, such as writing, is different from your right hand, so some people use their left hand to exercise.

Left-handed writing is suitable for people who are seriously left-handed, write badly, and even write with their right hands; Some people have to write with their left hand because their right hand is damaged for some reason; Old people and some people who consciously practice left-handed calligraphy and exercise their left limbs to keep fit. There are many differences between left-handed writing and right-handed writing. The left hand calligraphy is just a change of the hand holding the pen.

The starting order of words and the arrangement of paragraphs must also follow the general rules. The structure and stroke order of Chinese characters are designed based on the convenience of the right hand, so writing with the left hand requires some special skills. The most difficult thing is being right-handed, because for some reason you have to write with your left hand. For lefties, the right hand is not the dominant hand, but it is often the hand that has to be used frequently. For right-handers, writing with the left hand is to complete a new task with almost no hands, which is naturally more difficult.