According to Liu Shu, most commonly used characters in modern Chinese characters are pictophonetic characters. There are six combinations of pictophonetic characters: left-shaped right sound, right-shaped left sound, upper-shaped lower sound, lower-shaped upper sound, inner-shaped external sound and outer-shaped internal sound. No matter which form, it always consists of two parts, such as the word "Xie", which is composed of the "side word" ().
In literacy teaching, in order to achieve the purpose of pronunciation and understanding the meaning of words, the word "write" should be divided into two parts-"left sound" and the word "talent" should also be divided into two parts-"upper sound". If the analysis is divided into three parts, the characteristics of pictophonetic characters will be lost, which is not conducive to using the characteristics of Chinese characters to remember pronunciation and understand meaning.
In calligraphy teaching, in order to guide students to write beautifully and symmetrically, we often use the knowledge of frame structure to analyze glyphs. Left and right, left, middle, right, up and down, up and down, middle and lower structures, etc. Are the terms of the shelf structure of calligraphy knowledge. Shelf structure originally refers to the structure of buildings. The space between beams is called "space" and the space between beams is called "frame". Such as equal division, multiple division, golden section, etc. In the calligraphy term "structure", "structure" refers to the combination mode of compound words, and "frame" refers to the proportional relationship between the parts of compound words, such as the word "four", which is the upper and lower structure according to the structure, and the frame is equal to the upper and lower structure. The ancients said: "The method of one word lies in structure, proper structure and equal structure."
"Tree" is left, middle and right structure, and "Peng" is left and right structure.