Why are the characters in calligraphy so different? Asked the beginner.

Calligraphy is different from calligraphy, so we must pursue change. In a work, it is a writer's greatest pursuit to write the same word with different structure and momentum, especially cursive script. For example, the twenty words "zhi" in the world's first running script "Preface to Lanting" all have their own forms and become classics. The word "yuan" you said may be cursive. To write a complete poem, you don't have to pay attention to which one to use. The more kinds you use, the better.