Students, although Chinese characters have not evolved into pure phonetic characters, the invention of  pictophonetic character formation has greatly strengthened the phonetic function of Chinese characters.  The reason why Chinese characters have strong vitality is that pictophonetic characters play a great role.  More than 90% of modern regular script Chinese characters are pictophonetic characters, and new  characters can still be created. What pictophonetic sound? What is pictophonetic character? What are  the characteristics of pictophonetic characters? What is the positional relationship between the form side  and the sound side? The combination and application of the six categories of Chinese characters enabled Chinese characters to get rid of the fate that other pictographs faded away in the long river of history as time goes by, and gradually developed into morpheme characters of the ideographic system.When it is impossible or inconvenient to draw with specific images, how can we use an abstract symbol to represent characters? What are self-explanatory characters? What are the characteristics of self explanatory? What are the types of self explanatory? What are the differences among self explanatory, pictographs and associative compounds? If you want to know, please join me in "Shuo Wen Jie Zi".