Calligraphy embodies the unity of physical and mental cultivation. The shape is the temple of God. The maintenance of the body lies in exercise, which cultivates the body. When writing, refer to the posture of solid, empty palm and flat wrist; When writing, the wrist and elbow are hung up and constantly bent back and forth, left and right, up and down, which not only regulates the muscles and nerves of the arm, but also makes the fingers, arms, shoulders, back, waist and legs move, which is soothing but not violent; It's the mean, not the extraordinary. This kind of moderate movement embodied in calligraphy runs through the guiding connotation of "invigorating bones and muscles and moving limbs"

"God is the master of form", and Cao Tingdong, a health care practitioner in the Qing Dynasty, advocated that "stillness is the first thing to take pictures". Quiet to nourish the heart, nourishing the heart is to cultivate the shape. When learning calligraphy, people are absorbed. People's thoughts are pure and quiet, and their hearts are not disturbed by external things. Faced with the trend of pursuing fame and wealth, they are willing to be poor and stick to loneliness, so as to balance yin and yang in the body, ensure the stability of the internal environment of the human body, delay the cell division cycle, minimize the changes of qi and blood in their bodies, and have relatively slow metabolism.