Aura and charm are similar in some ways, but they are not exactly the same.
Aura usually refers to the overall atmosphere and feeling of a work of art, and is a general term for the breath, emotion, personality and other elements expressed by the artist through the work. It can be the unique temperament and mental state shown in art forms such as painting, music, and literary works.
Charm focuses more on the use of language and words, usually referring to the musical beauty, rhythm and artistic conception shown in literary works such as articles, poems and songs. It can also refer to the beauty of color, tone, form, etc. shown in a work of art.
Therefore, although charm and charm both express the beauty of a work of art, they have different emphases. Qiyun pays more attention to the overall atmosphere and feeling, while charm pays more attention to the use of language and the expression of beauty.