Why is regular script left low and right high?

The left low and right high of regular script are related to the stroke order of Chinese characters.

Regular script writing requires strict stroke order rules, that is, first up and then down, first left and then right. In fact, most of the words are basically at the bottom right. It is precisely because most of the words are written in the lower right, in order to write standardized words, we must be required to leave enough space for the lower right in advance, otherwise it may lead to insufficient writing space in the lower right.

In calligraphy, this rule is actually called "the bottom right is dominant". Not only horizontal strokes should be "left low and right high", but also many strokes should be left low and right high when writing. Such as the sketches on both sides of the bamboo prefix, the left side is low and the right side is high; The core logic of cursive prefix, the above two vertical drawings, is to leave enough space for the lower right in advance, with the pen on the lower left and the pen on the higher right.

The emergence of regular script:

The appearance of regular script follows closely Han Li's composition and pursues the further development of formal beauty. During the Three Kingdoms period at the end of Han Dynasty, the writing of Chinese characters gradually changed from wave to wave, and became "left" (dot), "sweep" (long left), "peck" (short left) and "lift" (straight hook).

Such as Wuwei medical bamboo slips and Juyan Han bamboo slips. Regular script is characterized by neat rules and is a model in fonts, so it is called regular script and has been used until modern times.