The most commonly used word is "Qi". When watching martial arts, you are full of boxing and firm but gentle. Looking at calligraphy and painting, paying attention to "vivid charm" makes many foreign friends who are exposed to China culture fall into a fog, and even directly translate it into "magical spirit".
Actually, Qi has a specific reference and is an aesthetic concept. It is not a logically visible "airflow" and "energy", but a smooth "noumenon" feeling produced in artistic activities, which is slightly different in different situations.
"Vivid charm" refers to the musicality in painting and calligraphy. "Vivid charm" is actually a smooth and well-connected feeling, which is very related to human breathing, so it is used as a metaphor.
The "Qi" in calligraphy is a sense of rhythm visually, and it is a sense of change in the intensity and dryness of pen and ink. The wind felt by the skin and people's breathing are the reference objects for the use of the word "qi". People use their own direct perception to deal with complex and subtle artistic feelings and physical changes. In addition, there is a sense of friction reflected in pen and ink. It is the synesthesia of vision, hearing and touch.
At the same time, qi in calligraphy is also a style to express personality and emotion, art is a simulation of a person's state, and writing is a holographic state of this person. Just like shaping a person with personality, this style is also called "Qi", so different personalities, different ways of thinking and different aesthetic feelings have created different "Qi", which also refers to the state of life.