Why is Cang Kejia called a word teacher?

Teach calligraphy in one word. According to historical records, Mr. Cang Kejia's main feature is to teach calligraphy word for word. He believes that the essence of education in China lies in words, so he is affectionately called "the teacher of one word" by students. Only when the words are written can other recognition, understanding and expression be better carried out. Cang Kejia is an outstanding poet, famous writer and editor in modern and contemporary China.