A person who writes calligraphy may not be proficient in character, but his deep brow and wise speech will give people a sense of sureness, inexplicable trust and involuntary attachment.
Normal performance is mostly-elegant and charming.
But there is no guarantee that everyone will be like this, and there are people as different as Zhang Song and Pang Tong.
As for some people's "Wei-Jin demeanor", I'm sorry about that. This word is not used to say people's temperament, but to write. Just don't be cynical, criticize the shortcomings of the times, care about the sufferings of the people, don't flatter, don't be arrogant, and don't bend over for five buckets of rice. If the word "flying" is used to describe people, it is also an expression of clank and pride, not a feeling of charm and elegance.