The so-called free body, mentioned in Sun's "Spectrum", "Where the pen is the body, the ink is the success; Confused and want to be wonderful, it is not ridiculous at all! " , probably means-let the letter and pen be the body and gather ink at will; I don't know how to copy the effect at all, and I don't know the law of writing with my wrist. I want to write beautifully, too Isn't that ridiculous?
Free body should not be called calligraphy. Calligraphy is regular. You can write whatever you want, as long as the reader can understand it. If you want to learn calligraphy, I suggest posting it to see the ancient handwriting and some related theories.