There are three arm postures in calligraphy: pillow wrist, hanging wrist and hanging elbow.
Pillow wrist is a wrist tribe on the desktop;
Hanging the wrist is to support the desktop with the forearm and hang the wrist;
Hanging the elbow is the whole arm of writing a book. Is that what you mean?
Hanging elbow method, the force of lifting the pen is on the shoulder, the fingers should be dexterous and the wrist should be solid and stable.